ai sdk parity for DurableAgent #668

ctate · 2025-12-21T01:06:28Z

Key Changes

Generation Settings

Support for temperature, maxOutputTokens, topP, topK, presencePenalty, frequencyPenalty, stopSequences, seed at constructor and per-stream level

Step Control

Added maxSteps to limit LLM calls (default: unlimited for backwards compatibility)
Added toolChoice (auto, none, required, or specific tool)
Added activeTools to filter available tools per-stream call

Callbacks

onChunk - called for each stream chunk
onStepFinish - called after each step completes
onFinish - called when all steps complete
onError - called on errors
onAbort - called when aborted via AbortSignal

Structured Output

Added experimental_output with Output.object({ schema }) for parsing structured responses

Context & Telemetry

Added experimental_context to pass data to tool executions
Added experimental_telemetry for observability

Stream Result

stream() now returns { messages, steps, experimental_output } instead of just { messages }

Other

prepareStep can now override generation settings, toolChoice, and context
Added experimental_repairToolCall for handling malformed tool calls
Enabled file, source, and tool input streaming chunks
Exported all new types from @workflow/ai

vercel · 2025-12-21T01:06:30Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Review	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Dec 24, 2025 5:31pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Dec 24, 2025 5:31pm
example-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-astro-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-express-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-fastify-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-hono-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-nitro-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-nuxt-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workbench-vite-workflow	Ready	Preview, Comment	Dec 24, 2025 5:31pm
workflow-docs	Ready	Preview, Comment	Dec 24, 2025 5:31pm

changeset-bot · 2025-12-21T01:06:33Z

🦋 Changeset detected

Latest commit: 0c0dfe1

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

github-actions · 2025-12-21T01:06:38Z

🧪 E2E Test Results

❌ Some tests failed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	286	0	11	297
❌ 💻 Local Development	236	26	8	270
✅ 📦 Local Production	262	0	8	270
✅ 🐘 Local Postgres	262	0	8	270
❌ 🪟 Windows	0	27	0	27
❌ 🌍 Community Worlds	58	62	0	120
Total	1104	115	35	1254

❌ Failed Tests

💻 Local Development (26 failed)

nuxt-stable (26 failed):

addTenWorkflow
addTenWorkflow
promiseAllWorkflow
promiseRaceWorkflow
promiseAnyWorkflow
readableStreamWorkflow
hookWorkflow
webhookWorkflow
webhook route with invalid token
sleepingWorkflow
nullByteWorkflow
workflowAndStepMetadataWorkflow
outputStreamWorkflow
outputStreamInsideStepWorkflow - getWritable() called inside step functions
fetchWorkflow
promiseRaceStressTestWorkflow
retryAttemptCounterWorkflow
retryableAndFatalErrorWorkflow
stepDirectCallWorkflow - calling step functions directly outside workflow context
crossFileErrorWorkflow - stack traces work across imported modules
hookCleanupTestWorkflow - hook token reuse after workflow completion
stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
closureVariableWorkflow - nested step functions with closure variables
spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
health check endpoint - workflow and step endpoints respond to __health query parameter

🪟 Windows (27 failed)

nextjs-turbopack (27 failed):

addTenWorkflow
addTenWorkflow
should work with react rendering in step
promiseAllWorkflow
promiseRaceWorkflow
promiseAnyWorkflow
readableStreamWorkflow
hookWorkflow
webhookWorkflow
webhook route with invalid token
sleepingWorkflow
nullByteWorkflow
workflowAndStepMetadataWorkflow
outputStreamWorkflow
outputStreamInsideStepWorkflow - getWritable() called inside step functions
fetchWorkflow
promiseRaceStressTestWorkflow
retryAttemptCounterWorkflow
retryableAndFatalErrorWorkflow
stepDirectCallWorkflow - calling step functions directly outside workflow context
crossFileErrorWorkflow - stack traces work across imported modules
hookCleanupTestWorkflow - hook token reuse after workflow completion
stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
closureVariableWorkflow - nested step functions with closure variables
spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
health check endpoint - workflow and step endpoints respond to __health query parameter

🌍 Community Worlds (62 failed)

mongodb (1 failed):

webhookWorkflow

redis (1 failed):

webhookWorkflow

starter-dev (3 failed):

dev e2e should rebuild on step change
dev e2e should rebuild on workflow change
dev e2e should rebuild on adding workflow file

starter (27 failed):

addTenWorkflow
addTenWorkflow
should work with react rendering in step
promiseAllWorkflow
promiseRaceWorkflow
promiseAnyWorkflow
readableStreamWorkflow
hookWorkflow
webhookWorkflow
webhook route with invalid token
sleepingWorkflow
nullByteWorkflow
workflowAndStepMetadataWorkflow
outputStreamWorkflow
outputStreamInsideStepWorkflow - getWritable() called inside step functions
fetchWorkflow
promiseRaceStressTestWorkflow
retryAttemptCounterWorkflow
retryableAndFatalErrorWorkflow
stepDirectCallWorkflow - calling step functions directly outside workflow context
crossFileErrorWorkflow - stack traces work across imported modules
hookCleanupTestWorkflow - hook token reuse after workflow completion
stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
closureVariableWorkflow - nested step functions with closure variables
spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
health check endpoint - workflow and step endpoints respond to __health query parameter

turso-dev (3 failed):

dev e2e should rebuild on step change
dev e2e should rebuild on workflow change
dev e2e should rebuild on adding workflow file

turso (27 failed):

addTenWorkflow
addTenWorkflow
should work with react rendering in step
promiseAllWorkflow
promiseRaceWorkflow
promiseAnyWorkflow
readableStreamWorkflow
hookWorkflow
webhookWorkflow
webhook route with invalid token
sleepingWorkflow
nullByteWorkflow
workflowAndStepMetadataWorkflow
outputStreamWorkflow
outputStreamInsideStepWorkflow - getWritable() called inside step functions
fetchWorkflow
promiseRaceStressTestWorkflow
retryAttemptCounterWorkflow
retryableAndFatalErrorWorkflow
stepDirectCallWorkflow - calling step functions directly outside workflow context
crossFileErrorWorkflow - stack traces work across imported modules
hookCleanupTestWorkflow - hook token reuse after workflow completion
stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
closureVariableWorkflow - nested step functions with closure variables
spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
health check endpoint - workflow and step endpoints respond to __health query parameter

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	26	1
✅ example	26	1
✅ express	26	1
✅ fastify	26	1
✅ hono	26	1
✅ nextjs-turbopack	26	1
✅ nextjs-webpack	26	1
✅ nitro	26	1
✅ nuxt	26	1
✅ sveltekit	26	1
✅ vite	26	1

❌ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	26	0	1
✅ express-stable	26	0	1
✅ fastify-stable	26	0	1
✅ hono-stable	26	0	1
✅ nextjs-turbopack-stable	27	0	0
✅ nextjs-webpack-stable	27	0	0
✅ nitro-stable	26	0	1
❌ nuxt-stable	0	26	1
✅ sveltekit-stable	26	0	1
✅ vite-stable	26	0	1

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	26	1
✅ express-stable	26	1
✅ fastify-stable	26	1
✅ hono-stable	26	1
✅ nextjs-turbopack-stable	27	0
✅ nextjs-webpack-stable	27	0
✅ nitro-stable	26	1
✅ nuxt-stable	26	1
✅ sveltekit-stable	26	1
✅ vite-stable	26	1

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	26	1
✅ express-stable	26	1
✅ fastify-stable	26	1
✅ hono-stable	26	1
✅ nextjs-turbopack-stable	27	0
✅ nextjs-webpack-stable	27	0
✅ nitro-stable	26	1
✅ nuxt-stable	26	1
✅ sveltekit-stable	26	1
✅ vite-stable	26	1

❌ 🪟 Windows

App	Passed	Failed	Skipped
❌ nextjs-turbopack	0	27	0

❌ 🌍 Community Worlds

App	Passed	Failed
✅ mongodb-dev	3	0
❌ mongodb	26	1
✅ redis-dev	3	0
❌ redis	26	1
❌ starter-dev	0	3
❌ starter	0	27
❌ turso-dev	0	3
❌ turso	0	27

📋 View full workflow run

❌ Some E2E test jobs failed:

Vercel Prod: success
Local Dev: failure
Local Prod: success
Local Postgres: success
Windows: success

Check the workflow run for details.

github-actions · 2025-12-21T01:06:39Z

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.031s (-26.1% 🟢)	1.007s (~)	0.975s	10	1.00x
🌐 Starter	Next.js (Turbopack)	0.036s (-8.7% 🟢)	1.014s (~)	0.978s	10	1.15x
🌐 Redis	Next.js (Turbopack)	0.037s (-8.2% 🟢)	1.018s (~)	0.982s	10	1.18x
💻 Local	Next.js (Turbopack)	0.038s (-4.5%)	1.018s (~)	0.980s	10	1.21x
💻 Local	Express	0.042s (-5.8% 🟢)	1.007s (~)	0.965s	10	1.35x
🌐 Turso	Next.js (Turbopack)	0.104s (-3.3%)	1.014s (~)	0.910s	10	3.34x
🌐 MongoDB	Next.js (Turbopack)	0.110s (-12.9% 🟢)	1.014s (~)	0.904s	10	3.52x
🐘 Postgres	Nitro	0.201s (-11.7% 🟢)	1.027s (+0.7%)	0.827s	10	6.43x
🐘 Postgres	Next.js (Turbopack)	0.247s (+11.7% 🔺)	1.020s (~)	0.773s	10	7.92x
🐘 Postgres	Express	0.380s (+28.2% 🔺)	1.013s (~)	0.633s	10	12.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.569s (-3.6%)	1.560s (-2.5%)	0.991s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.588s (-7.3% 🟢)	1.642s (+10.5% 🔺)	1.054s	10	1.03x
▲ Vercel	Nitro	0.649s (+29.2% 🔺)	1.603s (+6.1% 🔺)	0.954s	10	1.14x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.078s (-3.2%)	2.005s (~)	0.927s	10	1.00x
🌐 Redis	Next.js (Turbopack)	1.082s (-1.6%)	2.015s (~)	0.933s	10	1.00x
💻 Local	Next.js (Turbopack)	1.095s (~)	2.011s (~)	0.917s	10	1.02x
🌐 Starter	Next.js (Turbopack)	1.095s (~)	2.009s (~)	0.915s	10	1.02x
💻 Local	Express	1.112s (~)	2.006s (~)	0.894s	10	1.03x
🌐 Turso	Next.js (Turbopack)	1.306s (~)	2.013s (~)	0.706s	10	1.21x
🌐 MongoDB	Next.js (Turbopack)	1.311s (~)	2.013s (~)	0.702s	10	1.22x
🐘 Postgres	Next.js (Turbopack)	1.817s (-4.5%)	2.015s (~)	0.198s	10	1.69x
🐘 Postgres	Express	2.237s (+5.4% 🔺)	3.015s (~)	0.778s	10	2.08x
🐘 Postgres	Nitro	2.450s (+7.3% 🔺)	3.014s (~)	0.565s	10	2.27x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.680s (~)	3.564s (-1.5%)	0.884s	10	1.00x
▲ Vercel	Next.js (Turbopack)	2.720s (-1.7%)	3.807s (+3.9%)	1.087s	10	1.01x
▲ Vercel	Express	2.915s (-9.0% 🟢)	3.798s (-8.9% 🟢)	0.883s	10	1.09x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.530s (-2.3%)	11.011s (~)	0.481s	5	1.00x
🌐 Redis	Next.js (Turbopack)	10.592s (~)	11.024s (~)	0.432s	5	1.01x
🌐 Starter	Next.js (Turbopack)	10.593s (~)	11.010s (~)	0.418s	5	1.01x
💻 Local	Next.js (Turbopack)	10.655s (~)	11.016s (~)	0.361s	5	1.01x
💻 Local	Express	10.788s (~)	11.013s (~)	0.225s	5	1.02x
🌐 Turso	Next.js (Turbopack)	12.184s (~)	13.021s (~)	0.837s	5	1.16x
🌐 MongoDB	Next.js (Turbopack)	12.220s (~)	13.021s (~)	0.801s	5	1.16x
🐘 Postgres	Next.js (Turbopack)	15.222s (+1.1%)	16.037s (+2.6%)	0.816s	5	1.45x
🐘 Postgres	Express	16.138s (-21.1% 🟢)	16.831s (-20.0% 🟢)	0.693s	5	1.53x
🐘 Postgres	Nitro	20.335s (~)	21.039s (~)	0.704s	5	1.93x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	21.391s (+1.5%)	22.091s (~)	0.700s	5	1.00x
▲ Vercel	Next.js (Turbopack)	21.549s (+0.8%)	22.240s (~)	0.691s	5	1.01x
▲ Vercel	Nitro	22.032s (~)	22.680s (-1.1%)	0.647s	5	1.03x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.329s (-5.3% 🟢)	2.006s (~)	0.678s	15	1.00x
🌐 Starter	Next.js (Turbopack)	1.344s (~)	2.009s (~)	0.665s	15	1.01x
🌐 Redis	Next.js (Turbopack)	1.356s (~)	2.012s (~)	0.656s	15	1.02x
💻 Local	Next.js (Turbopack)	1.381s (-0.9%)	2.012s (~)	0.631s	15	1.04x
💻 Local	Express	1.418s (~)	2.007s (~)	0.588s	15	1.07x
🐘 Postgres	Next.js (Turbopack)	1.988s (-8.4% 🟢)	2.325s (-3.1%)	0.337s	13	1.50x
🐘 Postgres	Express	2.003s (-13.8% 🟢)	2.225s (-26.2% 🟢)	0.222s	14	1.51x
🌐 MongoDB	Next.js (Turbopack)	2.135s (~)	3.011s (~)	0.876s	10	1.61x
🌐 Turso	Next.js (Turbopack)	2.208s (~)	3.013s (~)	0.805s	10	1.66x
🐘 Postgres	Nitro	2.661s (+11.4% 🔺)	3.013s (~)	0.352s	10	2.00x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.801s (-25.1% 🟢)	3.588s (-22.2% 🟢)	0.787s	9	1.00x
▲ Vercel	Express	2.944s (-3.6%)	3.818s (-3.8%)	0.873s	8	1.05x
▲ Vercel	Next.js (Turbopack)	3.151s (+12.6% 🔺)	3.923s (-0.7%)	0.772s	8	1.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.981s (-8.7% 🟢)	2.159s (-29.1% 🟢)	0.178s	14	1.00x
💻 Local	Next.js (Turbopack)	2.095s (-3.8%)	2.945s (-5.8% 🟢)	0.850s	11	1.06x
💻 Local	Express	2.197s (-1.5%)	3.124s (-1.4%)	0.927s	10	1.11x
🌐 Redis	Next.js (Turbopack)	2.401s (-0.5%)	3.017s (~)	0.615s	10	1.21x
🌐 Starter	Next.js (Turbopack)	2.464s (+0.7%)	3.009s (~)	0.545s	10	1.24x
🐘 Postgres	Next.js (Turbopack)	2.640s (-4.0%)	3.017s (~)	0.378s	10	1.33x
🐘 Postgres	Express	2.890s (-7.1% 🟢)	3.011s (-20.3% 🟢)	0.122s	10	1.46x
🐘 Postgres	Nitro	2.996s (-10.3% 🟢)	3.361s (-16.6% 🟢)	0.365s	9	1.51x
🌐 Turso	Next.js (Turbopack)	4.685s (-1.3%)	5.179s (~)	0.494s	6	2.37x
🌐 MongoDB	Next.js (Turbopack)	4.787s (+0.6%)	5.179s (~)	0.392s	6	2.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.254s (-2.0%)	3.847s (-2.0%)	0.593s	8	1.00x
▲ Vercel	Express	3.540s (-6.3% 🟢)	4.122s (-13.6% 🟢)	0.582s	8	1.09x
▲ Vercel	Next.js (Turbopack)	3.618s (-4.7%)	4.338s (~)	0.720s	8	1.11x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.340s (-4.2%)	2.006s (~)	0.665s	15	1.00x
💻 Local	Next.js (Turbopack)	1.367s (-2.7%)	2.011s (~)	0.644s	15	1.02x
🌐 Starter	Next.js (Turbopack)	1.371s (+1.6%)	2.007s (~)	0.636s	15	1.02x
🌐 Redis	Next.js (Turbopack)	1.377s (-0.7%)	2.012s (~)	0.635s	15	1.03x
💻 Local	Express	1.414s (-1.3%)	2.005s (~)	0.592s	15	1.05x
🐘 Postgres	Express	1.642s (-9.9% 🟢)	2.010s (-6.7% 🟢)	0.368s	15	1.23x
🐘 Postgres	Next.js (Turbopack)	1.825s (-8.4% 🟢)	2.012s (-7.1% 🟢)	0.187s	15	1.36x
🐘 Postgres	Nitro	1.904s (+3.9%)	2.237s (+3.9%)	0.333s	14	1.42x
🌐 MongoDB	Next.js (Turbopack)	2.147s (~)	3.014s (~)	0.867s	10	1.60x
🌐 Turso	Next.js (Turbopack)	2.214s (-0.9%)	3.011s (~)	0.796s	10	1.65x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.627s (-13.8% 🟢)	3.680s (-6.5% 🟢)	1.053s	9	1.00x
▲ Vercel	Next.js (Turbopack)	2.740s (-1.5%)	3.778s (+5.5% 🔺)	1.038s	8	1.04x
▲ Vercel	Nitro	2.823s (-1.4%)	3.686s (-3.7%)	0.863s	9	1.07x

🔍 Observability: Express | Next.js (Turbopack) | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	2.150s (-2.5%)	3.035s (-3.4%)	0.885s	10	1.00x
💻 Local	Next.js (Turbopack)	2.159s (-6.8% 🟢)	3.125s (-4.3%)	0.966s	10	1.00x
💻 Local	Express	2.269s (-3.4%)	3.198s (-2.3%)	0.929s	10	1.06x
🌐 Redis	Next.js (Turbopack)	2.375s (-1.7%)	3.013s (~)	0.638s	10	1.10x
🌐 Starter	Next.js (Turbopack)	2.454s (~)	3.010s (~)	0.556s	10	1.14x
🐘 Postgres	Express	2.621s (-1.2%)	3.023s (~)	0.402s	10	1.22x
🐘 Postgres	Next.js (Turbopack)	2.637s (+2.4%)	3.021s (~)	0.385s	10	1.23x
🐘 Postgres	Nitro	2.771s (~)	3.011s (-3.7%)	0.241s	10	1.29x
🌐 Turso	Next.js (Turbopack)	4.748s (+0.9%)	5.186s (~)	0.438s	6	2.21x
🌐 MongoDB	Next.js (Turbopack)	4.783s (~)	5.179s (~)	0.396s	6	2.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.099s (+0.9%)	3.810s (+3.2%)	0.711s	8	1.00x
▲ Vercel	Nitro	3.130s (+6.4% 🔺)	3.720s (+2.8%)	0.590s	9	1.01x
▲ Vercel	Next.js (Turbopack)	3.139s (-3.5%)	3.719s (~)	0.580s	9	1.01x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks (includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.117s (-32.0% 🟢)	0.999s (~)	0.014s (-13.9% 🟢)	1.020s (~)	0.903s	10	1.00x
🌐 Redis	Next.js (Turbopack)	0.121s (-9.6% 🟢)	1.005s (~)	0.000s (~)	1.017s (~)	0.896s	10	1.03x
🌐 Starter	Next.js (Turbopack)	0.126s (-3.5%)	1.005s (~)	0.000s (-100.0% 🟢)	1.011s (~)	0.884s	10	1.08x
💻 Local	Next.js (Turbopack)	0.138s (-1.4%)	1.003s (~)	0.017s (-1.2%)	1.028s (~)	0.890s	10	1.18x
💻 Local	Express	0.173s (-2.5%)	0.993s (~)	0.015s (+4.1%)	1.022s (~)	0.849s	10	1.47x
🌐 MongoDB	Next.js (Turbopack)	0.480s (~)	0.968s (~)	0.000s (-100.0% 🟢)	1.012s (~)	0.533s	10	4.09x
🌐 Turso	Next.js (Turbopack)	0.503s (+1.7%)	0.949s (-0.6%)	0.000s (-100.0% 🟢)	1.014s (~)	0.510s	10	4.29x
🐘 Postgres	Next.js (Turbopack)	1.212s (+12.5% 🔺)	1.831s (-7.2% 🟢)	0.000s (NaN%)	2.017s (~)	0.805s	10	10.33x
🐘 Postgres	Express	1.431s (-36.2% 🟢)	1.655s (-40.9% 🟢)	0.000s (-66.7% 🟢)	2.014s (-33.2% 🟢)	0.583s	10	12.20x
🐘 Postgres	Nitro	2.153s (-2.2%)	2.892s (+1.7%)	0.000s (NaN%)	3.016s (~)	0.863s	10	18.35x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.581s (-6.5% 🟢)	3.256s (-0.9%)	0.907s (+151.4% 🔺)	4.588s (+13.4% 🔺)	2.007s	10	1.00x
▲ Vercel	Express	2.700s (+4.6%)	3.253s (-3.2%)	0.934s (+100.7% 🔺)	4.707s (+10.2% 🔺)	2.007s	10	1.05x
▲ Vercel	Nitro	2.805s (+11.1% 🔺)	3.149s (+8.5% 🔺)	0.876s (+32.8% 🔺)	4.533s (+14.4% 🔺)	1.727s	10	1.09x

🔍 Observability: Next.js (Turbopack) | Express | Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	8/8
🐘 Postgres	Next.js (Turbopack)	5/8
▲ Vercel	Express	4/8

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	💻 Local	8/8
Next.js (Turbopack)	🌐 Redis	3/8
Nitro	💻 Local	8/8

Column Definitions

Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
Wall Time: Total testbench time (trigger workflow + poll for result)
Overhead: Testbench overhead (Wall Time - Workflow Time)
Samples: Number of benchmark iterations run
vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

💻 Local: In-memory filesystem world (local development)
🐘 Postgres: PostgreSQL database world (local development)
▲ Vercel: Vercel production/preview deployment
🌐 Starter: Community world (local development)
🌐 Turso: Community world (local development)
🌐 MongoDB: Community world (local development)
🌐 Redis: Community world (local development)
🌐 Jazz: Community world (local development)

📋 View full workflow run

I, Chris Tate <chris@ctate.dev>, hereby add my Signed-off-by to this commit: f41c090 Signed-off-by: Chris Tate <chris@ctate.dev>

pranaygp · 2025-12-24T17:17:44Z

docs/content/docs/api-reference/workflow-ai/durable-agent.mdx

+  const controller = new AbortController();
+
+  // Set a timeout to abort after 30 seconds
+  setTimeout(() => controller.abort(), 30000);


this doesn't work. You can't use setTimeout in the workflow context since it makes things non-deterministic. calling setTimeout will throw

I took out the example

ai sdk parity

f41c090

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DCO Remediation Commit for Chris Tate <chris@ctate.dev>

53eeaa0

I, Chris Tate <chris@ctate.dev>, hereby add my Signed-off-by to this commit: f41c090 Signed-off-by: Chris Tate <chris@ctate.dev>

ctate changed the title ~~ai sdk parity~~ ai sdk parity for DurableAgent Dec 21, 2025

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fix zod

a9ee602

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View reviewed changes

remove abortsignal example

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pranaygp approved these changes Dec 24, 2025

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pranaygp merged commit 26d9769 into main Dec 24, 2025
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pranaygp deleted the ctate/da-parity branch December 24, 2025 17:37

vercel-release-bot mentioned this pull request Dec 23, 2025

Version Packages (beta) #676

Merged

ai sdk parity for DurableAgent #668

ai sdk parity for DurableAgent #668

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🧪 E2E Test Results

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📊 Benchmark Results

💻 Local Development

▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

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▲ Production (Vercel)

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