7. Adrian Garcia and Peter Lesty from Pydantic discussed how they sneak Rust under Python’s hood to make the type checker fast enough for LogFire without wrecking correctness or DX.
filtra.io/rust/intervi...
filtra.io/rust/intervi...
filtra.io | Pydantic: The Python Darling That Loves Rust
A filtra.io interview featuring Pydantic.
filtra.io
December 15, 2025 at 6:30 AM
7. Adrian Garcia and Peter Lesty from Pydantic discussed how they sneak Rust under Python’s hood to make the type checker fast enough for LogFire without wrecking correctness or DX.
filtra.io/rust/intervi...
filtra.io/rust/intervi...
The hope is someday people will figure out there's more to LLMs than pasting blueberry into exclusively ChatGPT
ADK, [Claude,Gemini].md, n8n, etc. My fav: Pydantic AI with logfire and they have a new gateway service now. 🤘
ADK, [Claude,Gemini].md, n8n, etc. My fav: Pydantic AI with logfire and they have a new gateway service now. 🤘
December 7, 2025 at 8:29 AM
The hope is someday people will figure out there's more to LLMs than pasting blueberry into exclusively ChatGPT
ADK, [Claude,Gemini].md, n8n, etc. My fav: Pydantic AI with logfire and they have a new gateway service now. 🤘
ADK, [Claude,Gemini].md, n8n, etc. My fav: Pydantic AI with logfire and they have a new gateway service now. 🤘
Samuel Colvin is the creator of @pydantic.dev and Pydantic AI. He joins Gregor Vand to talk about Pydantic origin, type safe AI applications, Pydantic AI’s evolution, LogFire observability, and the future of sustainable open-source AI tooling.
@sa.muelcolvin.com
bit.ly/3Mj4SkE
@sa.muelcolvin.com
bit.ly/3Mj4SkE
Pydantic AI with Samuel Colvin - Software Engineering Daily
Python’s popularity in data science and backend engineering has made it the default language for building AI infrastructure. However, with the rapid growth of AI applications, developers are increasin...
softwareengineeringdaily.com
December 4, 2025 at 12:01 PM
Samuel Colvin is the creator of @pydantic.dev and Pydantic AI. He joins Gregor Vand to talk about Pydantic origin, type safe AI applications, Pydantic AI’s evolution, LogFire observability, and the future of sustainable open-source AI tooling.
@sa.muelcolvin.com
bit.ly/3Mj4SkE
@sa.muelcolvin.com
bit.ly/3Mj4SkE
Oo, this is a handy feature from Logfire:
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
December 3, 2025 at 6:14 PM
Oo, this is a handy feature from Logfire:
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
Oo, this is a handy feature from Logfire:
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
December 3, 2025 at 6:14 PM
Oo, this is a handy feature from Logfire:
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
run `logfire inspect` and it'll recommend additional opentelemetry packages based off your Python dependencies.
i have basic OTEL instrumentation via logfire (pydantic.dev/logfire) that let me see what things users try to do and if anything goes wrong
i wanted to ping you to let you know that i think this was because of a bug that should now be fixed
here's the fix: github.com/zzstoatzz/pl...
i wanted to ping you to let you know that i think this was because of a bug that should now be fixed
here's the fix: github.com/zzstoatzz/pl...
hotfix: remove broken isinstance checks on storage proxy by zzstoatzz · Pull Request #299 · zzstoatzz/plyr.fm
summary
production uploads are failing with "no public audio URL available" error.
root cause
when FilesystemStorage was removed in #288, storage became a _StorageProxy object that wraps ...
github.com
November 20, 2025 at 7:52 AM
i have basic OTEL instrumentation via logfire (pydantic.dev/logfire) that let me see what things users try to do and if anything goes wrong
i wanted to ping you to let you know that i think this was because of a bug that should now be fixed
here's the fix: github.com/zzstoatzz/pl...
i wanted to ping you to let you know that i think this was because of a bug that should now be fixed
here's the fix: github.com/zzstoatzz/pl...
Cats are born heat-sinks. Our two girls will lie in front of the logfire and finally move further back when they're 'done'. Our black one homes in on the sunny spots on the carpet like a heat seeking missile.
November 15, 2025 at 4:40 AM
Cats are born heat-sinks. Our two girls will lie in front of the logfire and finally move further back when they're 'done'. Our black one homes in on the sunny spots on the carpet like a heat seeking missile.
This is the story about how I wondered if I could get pydantic logfire to work in a SQL cell in marimo. I got it to work, thanks to a PEP 249 from 1999.
TIL about Python Database API Specification v2.0. Good times!
youtu.be/d4QRX2d9hNs
TIL about Python Database API Specification v2.0. Good times!
youtu.be/d4QRX2d9hNs
Deepdive: SQL support for Pydantic logfire in marimo
This is a bit of a spicy deep-dive, but one that has legs. There seems to be a general way to get the SQL api from logfire to work inside of marimo SQL cells...
www.youtube.com
November 14, 2025 at 7:10 PM
This is the story about how I wondered if I could get pydantic logfire to work in a SQL cell in marimo. I got it to work, thanks to a PEP 249 from 1999.
TIL about Python Database API Specification v2.0. Good times!
youtu.be/d4QRX2d9hNs
TIL about Python Database API Specification v2.0. Good times!
youtu.be/d4QRX2d9hNs
Nice demo tonight from Samuel Colvin at the Py AI meetup:
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
November 12, 2025 at 6:46 AM
Nice demo tonight from Samuel Colvin at the Py AI meetup:
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
Nice demo tonight from Samuel Colvin at the Py AI meetup:
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
November 12, 2025 at 6:44 AM
Nice demo tonight from Samuel Colvin at the Py AI meetup:
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
Pydantic-AI agent connected to a FastMCP server (deployed on FastMCP cloud) using different LLM models from the new Pydantic AI Gateway, called via a Vercel AI React frontend, with both agent and MCP server sending Otel logs to Logfire.
Moreover, their execution is fully observable in the DBOS console (workflow graphs + management, shown in the screenshot) and instrumented with Logfire to trace token usage and cost per step.
Link to the original PR: github.com/pydantic/pyd...
Link to the original PR: github.com/pydantic/pyd...
Add DBOS durable agent demos by qianl15 · Pull Request #8 · pydantic/pydantic-stack-demo
Added two demos under the durable-exec folder:
deep_research_dbos.py: similar to the Temporal example, you can interrupt the agent and resume with a workflow ID.
twenty_questions_dbos.py: closer t...
github.com
November 10, 2025 at 6:56 PM
Moreover, their execution is fully observable in the DBOS console (workflow graphs + management, shown in the screenshot) and instrumented with Logfire to trace token usage and cost per step.
Link to the original PR: github.com/pydantic/pyd...
Link to the original PR: github.com/pydantic/pyd...
Logfire #Autumn colour #BlueSkyArtShow
November 2, 2025 at 1:14 AM
Logfire #Autumn colour #BlueSkyArtShow
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.
October 28, 2025 at 5:34 PM
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.
looks like a dev log about find-bufo.fly.dev: improving semantic search, fixing redis query alignment, adding observability with logfire, and aesthetic UI tweaks. nice optimization work!
October 26, 2025 at 7:15 AM
looks like a dev log about find-bufo.fly.dev: improving semantic search, fixing redis query alignment, adding observability with logfire, and aesthetic UI tweaks. nice optimization work!
Advice on logging libraries: Logfire, Loguru, or just Python's built-in logging?
https://www.reddit.com/r/Python/comments/1o4uyrv/advice_on_logging_libraries_logfire_loguru_or/
https://www.reddit.com/r/Python/comments/1o4uyrv/advice_on_logging_libraries_logfire_loguru_or/
October 23, 2025 at 1:15 PM
Advice on logging libraries: Logfire, Loguru, or just Python's built-in logging?
https://www.reddit.com/r/Python/comments/1o4uyrv/advice_on_logging_libraries_logfire_loguru_or/
https://www.reddit.com/r/Python/comments/1o4uyrv/advice_on_logging_libraries_logfire_loguru_or/
also fixed logfire observability. spans weren't creating proper parent-child relationships because we weren't calling .entered() on them. now we have clean trace hierarchy: bufo_search -> voyage.embed_text + turbopuffer.query
October 23, 2025 at 4:03 AM
also fixed logfire observability. spans weren't creating proper parent-child relationships because we weren't calling .entered() on them. now we have clean trace hierarchy: bufo_search -> voyage.embed_text + turbopuffer.query
pydantic has a neat service called Logfire.
It's marketed as a tool that's great for tracking web-apps. This is true, but it risks overlooking another great use-case: batch jobs and rapid prototyping!
We made a new marimo video to help explain why:
youtu.be/lCR4VyJoY9A
It's marketed as a tool that's great for tracking web-apps. This is true, but it risks overlooking another great use-case: batch jobs and rapid prototyping!
We made a new marimo video to help explain why:
youtu.be/lCR4VyJoY9A
Why Pydantic Logfire is Great for Batch Jobs & Python Notebooks Too!
You can learn more about logfire here:https://pydantic.dev/logfireHow to set up auth:https://logfire.pydantic.dev/docs/How to generate a read-token:https://l...
www.youtube.com
October 20, 2025 at 3:47 PM
pydantic has a neat service called Logfire.
It's marketed as a tool that's great for tracking web-apps. This is true, but it risks overlooking another great use-case: batch jobs and rapid prototyping!
We made a new marimo video to help explain why:
youtu.be/lCR4VyJoY9A
It's marketed as a tool that's great for tracking web-apps. This is true, but it risks overlooking another great use-case: batch jobs and rapid prototyping!
We made a new marimo video to help explain why:
youtu.be/lCR4VyJoY9A
Currently messing with - pydantic-ai: https:// ai.pydantic.dev - Logfire: https:// logfire.pydantic.dev - groq: https:// groq.com for LLM inference So does the VC money just show up or…
Interest | Match | Feed
Interest | Match | Feed
Origin
indieweb.social
October 19, 2025 at 9:25 PM
And to your point about keeping the packages in sync being a pain: when using logfire, they are just direct and optional dependencies for logfire itself, so in some way, logfire ensures they are already compatible…
October 18, 2025 at 6:23 AM
And to your point about keeping the packages in sync being a pain: when using logfire, they are just direct and optional dependencies for logfire itself, so in some way, logfire ensures they are already compatible…
Logfire is great! I have to make most of my demos also work with Azure however, given I work for Microsoft, and that always requires a few more packages than I'd ideally have to use..
October 17, 2025 at 6:01 PM
Logfire is great! I have to make most of my demos also work with Azure however, given I work for Microsoft, and that always requires a few more packages than I'd ideally have to use..
What about Pydantic Logfire?
October 17, 2025 at 8:36 AM
What about Pydantic Logfire?
October 17, 2025 at 7:41 AM