Pydantic AI Gateway is now in open beta 🚀 One API key for OpenAI, Anthropic, Google, Groq, and Bedrock. BYOK and Built-in providers. Real cost limits. Built-in observability. Zero translation delays. Free during beta. pydantic.dev/ai-gateway

Some personal (very belated*) news, I've moved to the bay area! Let me know if you're in SF or Palo Alto and want to get coffee. Also, last reminder that we have the inaugural Py AI meetup with @pydantic.dev in SF on Tuesday. Register now: luma.com/gjtfecc7 * I actually got here in the summer.

I added two new demos showing durable agent patterns (parallel vs sequential) with @pydantic.dev AI + @dbos.dev: - Deep Research: large fan-out parallel workflows - Twenty Questions: long sequential subagent chaining Both are long-running, so durable execution is necessary to survive crashes.

SentinelOne just announced their Purple AI MCP Server at #OneCon. Now, you can access SentinelOne’s security platform with your Pydantic AI MCP agent! Check out their GitHub repo: github.com/Sentinel-one...

I wrote a tutorial on integrating DBOS with Logfire. It's super easy to set up (kudos to the @pydantic.dev team!) -> just a few lines to configure the exporter and your Logfire write token. Once it's running, you'll get a unified view of your app with logs + traces in one place.

I'm teaming up with @sa.muelcolvin.com to launch a new meetup series, Py AI. Our first one is November 11 in San Francisco with talks from @pydantic.dev, @modal-labs.bsky.social, ReductoAI and @fastmcp.bsky.social. Hosted by our friends at pebblebed.com RSVP here: luma.com/gjtfecc7

Just putting this here. Not much more to say. @pydantic.dev

New social icon for @opensourcepledge.com spotted on @pydantic.dev's website. Lookin' sharp! 👀

Here's FastAPI 0.118.1, with compatibility for the latest @pydantic.dev. 🚀 This one had the combined effort of the community, the @pydantic.dev team, and the @fastapi.tiangolo.com team, all together. 🙌 github.com/fastapi/fast...

Several people (thanks to @mitsuhiko.at and @sa.muelcolvin.com) noted early on that DBOS had too many dependencies. In the latest Python release, we trimmed it down to just 6 direct deps while still implementing durable workflows and queues in one library. It's lightweight (for real).

You made my day @pydantic.dev 😁 pydantic.dev/articles/pyd...

I think this might be MASSIVE: Pydantic AI is getting support for @vercel.com AI Elements streaming, making it easy to build React or Next.js frontends for Pydantic AI agents. Video demo in the PR: github.com/pydantic/pyd...

@pydantic.dev AI 🤝 Temporal Together, run durable agents that: ✅Survive API failures & app restarts ✅Handle long-running & async tasks ✅ Preserve progress with replay-based fault tolerance Production-grade resilience for agents. 🔗 https://ai.pydantic.dev/temporal/

Played around with @logfire.pydantic.dev from @pydantic.dev during today's Python+AI office hours. Took just a couple minutes to set up and start seeing traces from agent calls!

ICYMI, #Heroku support for @pydantic.dev#Herokuis here. To get started, all you have to do is provision Managed Inference and Agents from Heroku Elements or via the command line. 🔗 https://sforce.co/3Ii73mR

Durable Agents in Pydantic AI – now with DBOS support! @pydantic.dev 🤝 DBOS Run agents that: - Survive restarts, failures, and deploys - Handle long-running async + human-in-the-loop tasks - Autosave progress with SQLite/Postgres Production-grade resilience in just a few lines of code.

The best docs are by @pydantic.dev

Pydantic AI now supports AG-UI - an open protocol for building chat agents, meaning you can use existing frontend apps to interact with @pydantic.dev AI agents. ai.pydantic.dev/ag-ui/#agent...

Is Slack the new BI layer for the AI era? It's now possible to build custom, self-service agentic analytics experiences in a single afternoon thanks to Slack, @pydantic.dev @anthropic.com MCP and ClickHouse

Podcast with @sa.muelcolvin.com on Software Engineering Radio is out! Covers the @pydantic.dev ecosystem including Pydantic Validation, Pydantic AI and @logfire.pydantic.dev. Well worth a listen. se-radio.net/2025/07/se-r...

It's so pleasant to start any data project by defining the @pydantic.dev models ❤️

Here's FastAPI 0.115.14 🚀 @patrick.wtf fixed support for unions of @pydantic.dev models in Form data. 🐛🎉 (This will make it easier to implement single sign-on 😉) github.com/fastapi/fast...

Working on a number of AI Agent Boilerplates using #pydantic @pydantic.dev

I’ll give a talk about @pydantic.dev AI and Logfire today 12:25 at @pyconit.bsky.social 🙏

Created a video on agents with @pydantic.dev ai - Creating bare bones agents - Adding tools - Using different llm models (local and cloud) - Running agent in different ways (a sync/async, streamed, graph) youtu.be/_m2YpvsdxSA

Well done to whoever came up with the name for @pydantic.dev - it’s perfect

At @pycon.us today @sa.muelcolvin.com is talking about Pydantic AI and Pydantic Logfire. Room 316, 11.30 today. There will be code. us.pycon.org/2025/schedul...

@pydantic.dev's FastA2A! (A2A is Google's Agent2Agent Protocol, which complements MCP (developers.googleblog.com/en/a2a-a-new...). ai.pydantic.dev/a2a/

Daily Startup Spotlight: @pydantic.dev Recently recognised in the 𝗥𝗢𝗦𝗦 𝗜𝗻𝗱𝗲𝘅, the company develops open-source tools and observability solutions, with a mission focused on improving developer experience through transparency and data validation. Find out more: www.linkedin.com/posts/ai-wor...

The recording of last week's meetup with Jason Liu, David Soria Parra (Anthropic), OpenAI and @sa.muelcolvin.com is now live on youtube. Notably this includes David's plan for the future of MCP. youtu.be/GqufkaLJV44

I love @pydantic.dev, it makes things so much easier and more elegant it almost makes me cry🥺

As an alternative to the Console, I also deployed a variant on @pydantic.dev 's pydantic.run : sweatstack.run

Are you building agents, or building with AI more generally? Double win: * Help make @logfire.pydantic.dev better * Get $100 Amazon voucher Sign up for a short interview with the amazing Greg Kogan: docs.google.com/forms/d/e/1F...

THE EVAL HAS LANDED. 🦅 pydantic-evals has been a major piece of work from David Montague over the last month. I'm pretty excited to see it move the dial on how easily Python developers can benchmark and improve AI code.

Pydantic Evals is a powerful evaluation framework designed to help you systematically test and evaluate the performance and accuracy of the systems you build, especially when working with LLMs. More info here: ai.pydantic.dev/evals/

Pydantic Logfire now supports dedicated EU data residency! If you need your data in the EU for compliance, or just want to keep your data physically within the EU, this new region makes it easy. Announcement blog post: pydantic.dev/articles/eu-...

The new Logfire JavaScript/TypeScript SDK is here! Built on @opentelemetry.io , it supports @cloudflare.social Workers, @vercel.com , & Node.js/Express. Check out the details: pydantic.dev/articles/log...

I feel that! Many tools are just infuriatingly bad, making very easy things slightly easier and supposedly easy things very hard. The exception: PydanticAI by @pydantic.dev. It's still relatively fresh, but it's built by people who know how to write production code for people who know.

I just opened a PR on @hf.co's Transformers repo for @pydantic.dev's Logfire integration as TrainerCallback 🤗 This integration facilitates real-time logging and monitoring, offering enhanced visibility into training metrics and events ⚙️

Pydantic Logfire Enterprise is here! We now offer both self-hosted Logfire and Cloud enterprise @logfire.pydantic.dev. pydantic.dev/articles/log...

Logfire's MCP server could fundamentally change how people complete the software development feedback loop: development -> runtime errors -> bug fix. Unlike other observability platforms, @logfire.pydantic.dev let's the model (or you!) write full SQL to find the relevant data.

Pydantic Logfire MCP Server is here! Easily hook your AI agents into observability data and supercharge debugging in real time. For Cursor integration, just update .cursor/mcp.json to use Logfire and you’re set: www.youtube.com/watch?v=lCda... Full details: pydantic.dev/articles/mcp...

Our new Logfire Rust SDK is out! It's a drop-in addition to your existing Rust instrumentation. Not all Python SDK features are there yet, let us know what you want us to tackle first: pydantic.dev/articles/rus...

We're hiring, come join the team and work on AI, observability and databases. pydantic.dev/articles/hir...

Have you worked with Pydantic AI from @pydantic.dev yet?

I received a report that the last FastAPI release broke some use cases. The report had a short and clear explanation of expected behavior and a minimal reproducible example. Love those. ✨ The use case was valid, it should be supported as it was standard @pydantic.dev.

Another tiny release, more bug fixes and upgrades, FastAPI 0.115.10 🤓 Improved compatibility with the (future) @pydantic.dev 2.11 and support for the latest Starlette 😎 github.com/fastapi/fast...

Amazing week in the US at AI Engineer and in SF. Interest in @pydantic.dev AI and @logfire.pydantic.dev was phenomenal Turns out developers want to take a bet on Pydantic's track record of developer experience, engineering correctness and open standards, not lock-in and crazy expression languages!

SF @pydantic.dev AI meetup confirmed for 5pm next Tuesday. lu.ma/ado3r4ro - the new NYC event is now full, so if you want to come to the SF meetup, please sign up ASAP.

Logfire: Uncomplicated Observability for Python Applications. Learn about Logfire, an observability platform designed to provide developers with powerful insights into their Python applications. dzone.com/articles/log...