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AI agent frameworks, Nov 2026 to May 2027: Pydantic AI 2.68.0 shipped today. The Agents SDK stable tag did not.

Eight frameworks have a tag you can pin. None of them has published a release date between December 2026 and May 2027.

GitHub repository and releases API, November 12, 2026, about 06:55 GMT. Star deltas use the November 5 snapshot on this site. Nothing here is a benchmark score.

Published 10 min readAI Agents Info Research

  • v2.68.0

    Pydantic AI, published today

    GitHub published_at 2026-11-12 01:56 UTC. The release name says 2026-11-11. The tag is the third stable in eight days.

  • Oct 15

    newest stable Agents SDK tag

    v0.24.0. A newer tag exists, v0.24.0-alpha.7, published November 8, and GitHub marks it prerelease.

  • 0

    dated releases through May 2027

    None of these eight repositories, A2A, or the MCP Python SDK printed a future release day on the tags read November 12.

  • +349

    LangGraph stars since November 5

    44,831 minus 44,482. Two GitHub reads, seven days. Not a run rate.

Executive summary

The six-month question builders actually have is which framework is still shipping, not which one will win. On the morning of November 12, 2026, GitHub’s API returned a stable tag from the last eight days for Pydantic AI, CrewAI, the Claude Agent SDK, Google ADK, and Microsoft Agent Framework. LangGraph’s newest tag is an SDK package from November 6. Mastra’s newest tag is November 4. OpenAI’s newest stable tag is October 15. 12345678

None of those release notes prints a day between December 2026 and May 12, 2027. A2A’s latest release remains v1.0.1, published May 28, 2026, with 26,501 stars on the same read. The MCP Python SDK’s latest tag remains v2.3.0 from October 2. The next protocol date this site already carries, July 28, 2027 for MCP removal eligibility, sits outside this window. It stays on the twelve-month outlook. 910

Stars moved, and they are the wrong ranking. From the November 5 snapshot to the November 12 read, LangGraph gained 349 stars, CrewAI 283, Mastra 140, the Agents SDK and Pydantic AI 123 each. CrewAI still leads this set at 60,797. The November 5 table is the census. This page is the week after it, and the months that have no date. The harness benchmark is where a score lives. A star count is not one.

Key findings

  1. 01Pydantic AI logoPydantic AI v2.68.0 was published at 01:56 UTC on November 12. v2.67.0 was November 10. v2.66.0 was November 4. The cadence is the fact. The notes do not name a December feature.
  2. 02OpenAI logoOpenAI’s newest stable tag is still v0.24.0 from October 15. The newest tag overall is v0.24.0-alpha.7, a prerelease from November 8 that keeps a classic runtime beside a native one. A prerelease is not a stable pin.
  3. 03Google ADK logoGoogle ADK v2.14.0, published November 7, says A2A, evaluation, execution environments, and core runtime modules graduated from experimental. The A2A repository’s own latest release is still v1.0.1 from May 28, 2026.
  4. 04Microsoft Agent Framework logoMicrosoft Agent Framework python-1.25.0, published November 7, drops Python 3.10 and adds callable MCP approval policies. Mastra’s latest tag is still @mastra/core@1.82.0 from November 4, even though the repo was pushed on November 12.

Shipping is a tag, not a roadmap

A framework comparison that ranks stars is a popularity sort. The question for the next six months is whether the repository you pin is still cutting stable tags, whether the tag is the package you import, and whether anyone has dated the next break. On November 12 the answer is a table. It is not a winner.

Eight frameworks, one morning

Stars and tags below are the GitHub API on November 12, 2026. The repository responses carried Date headers from 06:55 GMT. Latest-release is the newest non-prerelease. Where a newer prerelease exists, the table says so. Days are calendar days from published_at to November 12, UTC. The November 5 star is this site’s snapshot, not a second live call. 12345678

AI agent frameworks compared on the stable tag and the star count, read November 12, 2026. Not a quality ranking. Full November 5 census: the framework GitHub stats report.
RepositoryStable tagPublished (UTC)Stars Nov 12Stars Nov 5
langchain-ai/langgraphsdk==0.4.14 (core 1.2.20 on Nov 5)2026-11-0644,83144,482
crewAIInc/crewAI1.15.402026-11-1160,79760,514
microsoft/agent-frameworkpython-1.25.02026-11-0714,64214,539
openai/openai-agents-pythonv0.24.0 (alpha.7 is prerelease)2026-10-1530,63130,508
google/adk-pythonv2.14.02026-11-0722,18622,109
pydantic/pydantic-aiv2.68.02026-11-1221,15521,032
mastra-ai/mastra@mastra/core@1.82.02026-11-0429,47929,339
anthropics/claude-agent-sdk-pythonv0.2.1802026-11-098,5278,430
Calendar days from the stable tag’s published_at to November 12, UTC. OpenAI’s prerelease on November 8 is not the bar. Pydantic AI’s tag was published the same UTC day, so the bar is zero.
Days since the newest stable tag, as of November 12, 2026Calendar days from the stable tag’s published_at to November 12, UTC. OpenAI’s prerelease on November 8 is not the bar. Pydantic AI’s tag was published the same UTC day, so the bar is zero. Unit: days. GitHub releases API, November 12, 2026. Stable tags only. [[1]][[2]][[3]][[4]][[5]][[6]][[7]][[8]]Pydantic AI0CrewAI1Claude Agent SDK3Google ADK5Microsoft5LangGraph SDK6Mastra8OpenAI Agents SDK28
Days since the newest stable tag, as of November 12, 2026
CategoryDays
Pydantic AI0
CrewAI1
Claude Agent SDK3
Google ADK5
Microsoft5
LangGraph SDK6
Mastra8
OpenAI Agents SDK28

GitHub releases API, November 12, 2026. Stable tags only. 12345678 Unit: days.

stargazers_count on November 12 minus the November 5 snapshot. Seven days, two reads. Do not turn the gap into a monthly rate.
Star change from the November 5 snapshot to the November 12 readstargazers_count on November 12 minus the November 5 snapshot. Seven days, two reads. Do not turn the gap into a monthly rate. Unit: stars. GitHub repository API, November 12, 2026, and this site’s November 5 snapshot. [[1]][[2]][[3]][[4]][[5]][[6]][[7]][[8]]LangGraph+349CrewAI+283Mastra+140Agents SDK+123Pydantic AI+123Agent Framework+103Claude SDK+97ADK+77
Star change from the November 5 snapshot to the November 12 read
CategoryStar change
LangGraph+349
CrewAI+283
Mastra+140
Agents SDK+123
Pydantic AI+123
Agent Framework+103
Claude SDK+97
ADK+77

GitHub repository API, November 12, 2026, and this site’s November 5 snapshot. 12345678 Unit: stars.

CrewAI leads the star column and shipped 1.15.40 on November 11. The notes are a patch: chromadb leaves the embedding-function layer, historical state can be read by row id, and an agent stops when CrewAI AMP cannot resolve its apps. That is maintenance. It is not a new orchestration model. The November 5 report still has the wider set of 19 repositories, including the ones that have gone quiet. This table is the eight the brief was asked to watch, re-read a week later. 2

What the new tags actually changed

Pydantic AI cut three stables in eight days

v2.68.0’s notes, published November 12, add OutputTokenLimitExceeded and a fallback when a response is cut off at max_tokens, move approvals and answers inside the run with RequestInput, and add DelegationTasks.discover(). Those are harness controls: a stop when the output budget is hit, a place to ask the user, and a way to find delegated work. The notes do not say the next tag is December. 1

ADK graduated A2A and evals

ADK v2.14.0’s highlights, dated November 4 in the notes and published November 7, move execution environments, A2A, evaluation, and core runtime modules out of experimental. Multi-run eval is a flag, adk eval --num_runs, with a parallelism flag. Tool arguments can be matched exactly, case-insensitively, with a numeric tolerance, or by an LLM. The same notes say a 30-node workflow’s 200-turn run was 23% faster with 9% lower peak memory. That is the project’s own measurement of one workflow, not a public leaderboard. The harness benchmark is the page that keeps SWE-bench and Terminal-Bench. 5

Microsoft’s break is Python 3.11

python-1.25.0, published November 7, marks Python 3.10 ineligible across the framework packages, including the A2A and MCP hosting packages. It also adds callable MCP discovery approval policies: tool-name and read-only filters, caller overrides, and a refresh for retained tools. dotnet-1.28.0, published November 6, adds a GA computer tool on Foundry and says the Foundry project endpoint still needs the preview tool. Two languages, two tags, one week, and no date after that. 4

OpenAI’s stable line stopped in October

v0.24.0-alpha.7, published November 8, tells you to import the retained v0 runtime through agents.classic, to store sessions yourself, and to attach voice and hosted tools to native agents. It also says executor write defaults changed. That is a migration note for people already on the alpha, not a stable release announcement. /releases/latest still returns v0.24.0 from October 15. If your lockfile tracks latest, it will not pick up the alpha. If your lockfile tracks the newest tag by date, it will, and you will be on a prerelease. 3

MCP and A2A did not get a six-month date

a2aproject/A2A had 26,501 stars on this read. Its latest release is v1.0.1, published May 28, 2026, a spec bugfix that prefers application/a2a+json. The repository was pushed November 11. A push is not a release. ADK calling A2A stable is a client statement. It does not move the protocol tag. 95

modelcontextprotocol/python-sdk’s latest release is v2.3.0, published October 2, 2026. The specification repository was pushed November 12. This brief did not re-download the specification HTML. The MCP six-month report, checked November 10, still has revision 2026-07-28 as current. July 28, 2027, the day four features become eligible for removal, is after May 2027. Eligibility is not deletion. 10

Announced, likely, and watch for

Announced, for a forward window, means a source names a day between November 12, 2026 and May 12, 2027. The tags above are history. They are not a schedule. Likely means a source points at a month in the window and withholds the day. No release note in this set does that. Watch is the short list of things that would change the table.

November 2026 through May 2027. A blank likely column is the finding.
ItemLabelWhat would change it
A named framework release day after November 12Not announcedA tag, a milestone, or a maintainer post that prints a date.
Pydantic, CrewAI, ADK, Agent Framework, Claude SDK cadenceAlready shippedThe next tag. None of the notes aims it at a month.
OpenAI Agents SDK stable tag after v0.24.0WatchA non-prerelease newer than October 15. Alpha.7 does not count.
Mastra tag after @mastra/core@1.82.0WatchThe repo was pushed November 12. The latest release was still November 4.
A2A release after v1.0.1WatchThe protocol repo has not released since May 28, 2026.
MCP removal of Roots, Sampling, Logging, or Dynamic Client RegistrationOutside this windowEligibility opens July 28, 2027, on the twelve-month page. Not a May event.

FAQ

Which AI agent framework released an update in November 2026?

On the November 12 read, stable tags dated in November were LangGraph’s SDK on November 6 and core library on November 5, CrewAI on November 11, Microsoft’s Python package on November 7 and .NET package on November 6, Google ADK on November 7, Pydantic AI on November 4, November 10, and November 12, Mastra on November 4, and the Claude Agent SDK on November 9. OpenAI’s November tag is a prerelease.

What is the best AI agent framework?

This page does not pick one. CrewAI has the most stars in the set, 60,797. Pydantic AI has the newest stable tag, v2.68.0. OpenAI’s stable tag is the oldest of the eight. Those are different questions. A benchmark score is a third question, and it lives on the harness benchmark.

Is the OpenAI Agents SDK ahead of LangGraph?

Not on the clocks this page uses. LangGraph’s newest stable tag is November 6. The Agents SDK’s newest stable tag is October 15. LangGraph has more stars, 44,831 to 30,631. Neither number is a capability score.

Does Google ADK support A2A?

ADK v2.14.0 says the A2A integration graduated from experimental, and the CLI can generate an agent card. The A2A repository’s latest release is still v1.0.1 from May 28, 2026.

What should a team pin for the next six months?

The stable tag in the table, plus a test that fails when the import breaks. No repository in this set has published the tag you will be on in May. Re-read /releases/latest before you let a bot bump it, because LangGraph’s latest tag is an SDK package and OpenAI’s newest tag is a prerelease.

Methodology

Stars are stargazers_count from the GitHub repository API on November 12, 2026. Response Date headers on the eight framework calls were 06:55 GMT. Tags are published_at from the releases API. /releases/latest skips prereleases, so OpenAI’s stable tag and its newer alpha are both reported. Days are UTC calendar dates, not rounded hours.

Star deltas subtract this site’s November 5, 2026 snapshot from the November 12 counts. The arithmetic is checked in the source file. A seven-day gap is not projected to May.

A2A stars and the MCP Python SDK tag were read the same morning. The MCP specification HTML was not re-fetched. The July 28, 2027 eligibility date is cited from the twelve-month report, not re-derived here.

ADK’s 23% and 9% figures are the release notes’ measurement of one 30-node, 200-turn workflow. They are not copied onto SWE-bench. No survey, no expert panel, and no unpublished roadmap was added.

Sources

  1. 1Pydantic AI v2.68.0. Published 2026-11-12T01:56:19Z. Release name says 2026-11-11. Prior stables on the releases list: v2.67.0 at 2026-11-10T23:11:23Z and v2.66.0 at 2026-11-04T11:51:46Z. Repository stars 21,155 at the November 12 read.
  2. 2CrewAI 1.15.40. Published 2026-11-11T22:19:53Z. Stars 60,797. November 5 snapshot 60,514.
  3. 3OpenAI Agents SDK releases. v0.24.0-alpha.7 published 2026-11-08T07:05:11Z, prerelease. v0.24.0 published 2026-10-15T02:20:12Z, not a prerelease. /releases/latest returned v0.24.0. Stars 30,631. November 5 snapshot 30,508.
  4. 4Microsoft Agent Framework python-1.25.0. Published 2026-11-07T15:52:42Z. Python 3.11 or later. MCP discovery approval policies. dotnet-1.28.0 published 2026-11-06T22:00:01Z. Stars 14,642. November 5 snapshot 14,539.
  5. 5Google ADK v2.14.0. Published 2026-11-07T00:58:18Z. Notes headed 2.14.0 (2026-11-04). A2A, evaluation, environments, and core runtime marked stable. Stars 22,186. November 5 snapshot 22,109.
  6. 6LangGraph releases. sdk==0.4.14 published 2026-11-06T03:03:34Z and returned by /releases/latest. Core tag 1.2.20 published 2026-11-05T02:20:53Z. That core tag’s notes add a strict resume mode that refuses stale interrupt answers, and a distinct id for each interrupt() in a task. Stars 44,831. November 5 snapshot 44,482.
  7. 7Mastra @mastra/core@1.82.0. Published 2026-11-04T10:59:56Z. Still the newest release on November 12. Repository pushed_at 2026-11-12T06:55:01Z. Stars 29,479. November 5 snapshot 29,339.
  8. 8Claude Agent SDK v0.2.180. Published 2026-11-09T20:09:14Z. Stars 8,527. November 5 snapshot 8,430, when the latest tag was v0.2.178.
  9. 9A2A v1.0.1. Published 2026-05-28T11:34:36Z. Spec bugfix. Repository stars 26,501 on the November 12 read. Pushed 2026-11-11.
  10. 10MCP Python SDK v2.3.0. Published 2026-10-02T22:02:27Z, returned by /releases/latest on November 12. The specification repository modelcontextprotocol/modelcontextprotocol was pushed 2026-11-12 and had 9,675 stars. The specification text was not re-fetched.

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Citation

AI Agents Info. "AI agent frameworks, Nov 2026 to May 2027: Pydantic AI 2.68.0 shipped today. The Agents SDK stable tag did not.." Last updated November 12, 2026. https://www.aiagentsinfo.com/reports/ai-agent-frameworks-next-6-months.

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<blockquote cite="https://www.aiagentsinfo.com/reports/ai-agent-frameworks-next-6-months">
<p>Eight frameworks have a tag you can pin. None of them has published a release date between December 2026 and May 2027.</p>
<footer><a href="https://www.aiagentsinfo.com/reports/ai-agent-frameworks-next-6-months">AI agent frameworks, Nov 2026 to May 2027: Pydantic AI 2.68.0 shipped today. The Agents SDK stable tag did not.</a>, AI Agents Info, last updated November 12, 2026.</footer>
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