Vercel AI SDK vs OpenAI Agents SDK: license, pricing and features compared (October 2026)
Vercel AI SDK and OpenAI Agents SDK are both listed under Agent building. License: Vercel AI SDK is Apache-2.0 (per LICENSE file); OpenAI Agents SDK is MIT. GitHub stars on Oct 25, 2026: OpenAI Agents SDK 30,279 (openai/openai-agents-python) vs Vercel AI SDK 27,511 (vercel/ai). Stars measure attention, not quality. Vercel AI SDK is the better fit for: TypeScript and Next.js teams building chat or agent UIs. OpenAI Agents SDK is the better fit for: Python developers building agents on OpenAI models. Facts were read from vendor and GitHub pages on Oct 25, 2026 and are Reported; what we ran ourselves is under What we measured.
Our pick: Pick Vercel AI SDK for typeScript and Next.js teams building chat or agent UIs; pick OpenAI Agents SDK for python developers building agents on OpenAI models. No overall winner: we have not benchmarked them against each other. Updated (America/Chicago).
Evidence: Both tools have a Tested entry (scope on each tool page). The facts in the tables were read from each vendor's own pages and the public GitHub API on 2026-10-25 (America/Chicago) and are Reported. The What we measured section lists what we have actually run, with links to the test logs, and what we have not run yet; anything we could not confirm is marked as not captured.
Vercel
Tested (smoke test)
Vercel's TypeScript SDK that gives one API across many model providers, with streaming and agent helpers.
OpenAI · v0.24.0
Tested (smoke test)
Pick it if you want a small, official framework for multi-agent flows on the OpenAI API; the update is incremental.
Side by side, from what we recorded
Each row compares one recorded fact for both tools. Rows are not weighted and nothing is added up into a score; the note under each row says what the marker means.
Evidence
Tested (smoke test) for Vercel AI SDKTested (smoke test) for OpenAI Agents SDKTested = we ran it (smoke test); Reported = we read official sources
Smoke-test result
Passed for Vercel AI SDKPassed for OpenAI Agents SDKEach tool's own smoke test on the same CPU-only machine; tasks differ unless the logs say otherwise
Release date
Oct 24, 2026 (Vercel AI SDK is ahead on this row) for Vercel AI SDKOct 15, 2026 for OpenAI Agents SDKNewer date only; says nothing about quality
Pricing we could verify
Verified from official page (Vercel AI SDK is ahead on this row) for Vercel AI SDKNot verified for OpenAI Agents SDKAbout our evidence only, not about the price
Steps in our setup guide
2 for Vercel AI SDK3 for OpenAI Agents SDKCounts our guide's steps, not difficulty
Sources we cite
2 for Vercel AI SDK2 for OpenAI Agents SDKHow much we had to read; more is not better
A list of recorded differences, not a quality score or a ranking. We have not benchmarked these tools against each other; the smoke-test row links each tool's own log. How we label evidence.
What we measured
We ran both Vercel AI SDK and OpenAI Agents SDK ourselves; the table links each full test log. These are smoke tests on one CPU-only machine, not benchmarks. Both ran the same task on the same local model, so the two results are comparable on that one task only. Model-driven runs used a small local Qwen2.5-3B-Instruct model.
| Test | Vercel AI SDK | OpenAI Agents SDK |
|---|---|---|
| Hands-on test log (install and a real task) | Tested: Vercel AI SDK 6.0.315 (Node 20) / 7.0.153 (Node 24), Oct 25, 2026: passed. Vercel AI SDK passed our one-tool task 3 of 3 on Node 20 (ai 6.0.315) and 3 of 3 on Node 24 (ai 7.0.153); the install is 26 to 27 MB. Full test log | Tested: OpenAI Agents SDK for JavaScript 0.21.0, Oct 25, 2026: passed. OpenAI Agents SDK for JS (0.21.0) passed 2 of 5 (Node 20) and 1 of 5 (Node 24) at default sampling but 5 of 5 on both Node versions once temperature was pinned to 0. Full test log |
How we test and label results: methodology. All test logs: test hub.
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Vercel AI SDK vs OpenAI Agents SDK at a glance
Vercel AI SDK and OpenAI Agents SDK are both listed under Agent building. Agentic Weekly's Vercel AI SDK page names OpenAI Agents SDK as an alternative. Vercel AI SDK: Vercel's TypeScript SDK that gives one API across many model providers, with streaming and agent helpers. OpenAI Agents SDK: Pick it if you want a small, official framework for multi-agent flows on the OpenAI API; the update is incremental.
| Feature | Vercel AI SDK | OpenAI Agents SDK |
|---|---|---|
| Vendor | Vercel | OpenAI |
| Listed under | Agent building | Agent building |
| License | Apache-2.0 (per LICENSE file) | MIT |
| Pricing model | Free and open source | Not captured on the pages we read |
| Free tier | Free to self-host | Not captured on the pages we read |
| Paid plans | None listed for the library | Not captured on the pages we read |
| Platforms | TypeScript / JavaScript | Not captured on the pages we read |
| Public repository | vercel/ai: 27,511 stars, last push Oct 26, 2026 UTC (GitHub API, Oct 25, 2026) | openai/openai-agents-python: 30,279 stars, last push Oct 22, 2026 UTC (GitHub API, Oct 25, 2026) |
| Latest release we saw | Oct 24, 2026 | v0.24.0, Oct 15, 2026 |
| Evidence | Tested (scope on its tool page) | Tested (scope on its tool page) |
How Vercel AI SDK and OpenAI Agents SDK differ
- License: Vercel AI SDK is Apache-2.0 (per LICENSE file); OpenAI Agents SDK is MIT.
- GitHub stars on Oct 25, 2026: OpenAI Agents SDK 30,279 (openai/openai-agents-python) vs Vercel AI SDK 27,511 (vercel/ai). Stars measure attention, not quality.
- Vercel AI SDK is "Free and open source"; the entry for OpenAI Agents SDK has no pricing model we could confirm (pricing not verified).
- Latest release we saw: Vercel AI SDK's newest release on Oct 24, 2026; OpenAI Agents SDK v0.24.0 on Oct 15, 2026 (9 days earlier).
- Vercel AI SDK's pricing details were captured; OpenAI Agents SDK's were not published or could not be read, so a price comparison would be one-sided.
Which should you pick?
- Pick Vercel AI SDK if: TypeScript and Next.js teams building chat or agent UIs. Skip it if: you work in Python.
- Pick OpenAI Agents SDK if: Python developers building agents on OpenAI models; teams that want MCP tools plus approvals and sessions. Skip it if: you need a TypeScript-first framework.
Strengths and limits
| Feature | Vercel AI SDK | OpenAI Agents SDK |
|---|---|---|
| Strengths | Apache-2.0; Provider-agnostic | MIT license, official OpenAI project; Small surface area; MCP, sessions and tracing support |
| Limits | JavaScript ecosystem only; Our test was one small task on a local 3B model; it does not show behaviour with hosted models or larger jobs | Releases are mostly dependency bumps and fixes; Works best with OpenAI models; We only ran it against a local model through the Chat Completions class, not OpenAI's hosted models |
What we did not verify
- OpenAI Agents SDK: Support for non-OpenAI models.
- Output quality, speed and reliability beyond the smoke tests listed under What we measured: not compared.
Latest news briefs on Vercel AI SDK and OpenAI Agents SDK
- OpenAI GPT-6.1 Terra: a $1/$5 computer-use model, and what the launch post leaves out (Reported; first seen 2026-10-26 19:05 UTC)
FAQ
Is Vercel AI SDK or OpenAI Agents SDK open source?
Vercel AI SDK: Apache-2.0 (per LICENSE file). OpenAI Agents SDK: MIT. Licenses come from each project's GitHub repository or the vendor's own pages, read Oct 25, 2026; read the license text itself before redistributing or building a competing service.
Does Vercel AI SDK or OpenAI Agents SDK have a free plan?
Vercel AI SDK: Free: to self-host. OpenAI Agents SDK: we did not capture free-tier details. Checked Oct 25, 2026; prices and limits change, so confirm on each vendor's page.
Which was updated more recently, Vercel AI SDK or OpenAI Agents SDK?
Vercel AI SDK's newest release we saw is (Oct 24, 2026); OpenAI Agents SDK's is v0.24.0 (Oct 15, 2026). Read Oct 25, 2026 from the official release page or repository; a newer date is not a quality ranking.
What is the main difference between Vercel AI SDK and OpenAI Agents SDK?
License: Vercel AI SDK is Apache-2.0 (per LICENSE file); OpenAI Agents SDK is MIT. GitHub stars on Oct 25, 2026: OpenAI Agents SDK 30,279 (openai/openai-agents-python) vs Vercel AI SDK 27,511 (vercel/ai). Stars measure attention, not quality.
Sources
- AI SDK (fetched 2026-10-25)
- AI SDK repository (GitHub) (fetched 2026-10-25)
- openai-agents-python v0.24.0 release (fetched 2026-10-25)
- README (fetched 2026-10-25)
Related
Page history
- : First published. Facts read from vendor pages and the GitHub API on 2026-10-25.
Markdown version for agents: /compare/vercel-ai-sdk-vs-openai-agents-sdk.md
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