Python Releases
Python language news, releases and ecosystem updates. New features, breaking changes, security advisories and deprecations - each summarised in plain English and updated continuously.
Tracking 133 Python releases · Updated
- Pydantic AI Releases sdkaipreviewdeprecationengineerpython-agentic ·
Pydantic-AI v2.14.0: Reasoning effort and durability improvements
This release introduces enhanced reasoning capabilities for Mistral models and new durability options, replacing deprecated agent wrappers. It also includes fixes such as the removal of specific shut-down Gemini models. These changes benefit developers integrating AI models who need more control over reasoning processes and durability strategies. The update is available now.
feature patch - uv Releases sdkpreviewengineer ·
uv 0.11.30: Python 3.15 support, workspace enhancements, performance gains
This release of uv adds support for CPython 3.15.0b4 and introduces several preview features for workspace management. Significant performance improvements have been made across the resolver and cache handling, alongside bug fixes for uninstall and pyvenv.cfg path preservation. The release targets Python developers and architects working with package management, offering enhanced speed and new capabilities.
patch - CrewAI Releases sdkgovernanceengineerpython-agentic ·
crewAI 1.15.5: Authenticate Skill Registry Downloads
Version 1.15.5 of crewAI introduces authentication for skill registry downloads, enhancing security for users. This patch ensures that only authorized users can access and download skills. The update also includes documentation refinements.
feature patch - Python Insider blogpreviewengineer ·
Python 3.15.0 Beta 4 Released with Numerous Fixes and Features
Python 3.15.0 beta 4 is now available, marking the final beta release before the release candidate phase. This version includes approximately 298 bug fixes, build improvements, and documentation changes, along with major new features like explicit lazy imports and a new frozendict built-in type. Developers are encouraged to test their projects with this preview to prepare for the stable release, though it is not recommended for production use.
feature patch announcement - Pydantic AI Releases sdkaiengineermediapython-agentic ·
pydantic-ai v2.13.0: New Instrumentation, Usage Metrics, and Bug Fixes
Pydantic-ai version 2.13.0 introduces new features for instrumentation and usage tracking, including the ability to omit model request parameters from spans and a new `cache_hit_ratio` property. It also enhances error handling for content filters and fixes several bugs related to streaming and temporal workflows. These updates are primarily relevant to developers integrating AI models via pydantic-ai, offering improved debugging and monitoring capabilities.
feature patch - CrewAI Releases sdkaiengineerpython-agentic ·
crewAI 1.15.4 promotes Skills Repository to stable
The crewAI 1.15.4 patch release promotes the Skills Repository feature from experimental status to general availability. This change benefits developers using crewAI by providing a stable and integrated way to manage and share AI agent skills. The release also includes documentation updates for Flows in Studio.
feature patch - OpenAI Agents SDK (Python) Releases sdkaiengineerpython-agentic ·
OpenAI Agents Python v0.18.3: Bug Fixes and Enhancements
This release of the OpenAI Agents Python library (v0.18.3) addresses several bugs and introduces minor enhancements, including configurable tracing spans and response usage tracking. These updates improve memory management, error handling, and session persistence for developers building agent applications. The changes affect engineers and architects working with the OpenAI Agents Python SDK.
patch - Pydantic AI Releases sdkaiengineerpython-agentic ·
pydantic-ai v2.12.0: New AI model, enhanced event handling
Pydantic-ai v2.12.0 introduces support for the Moonshot AI kimi-k3 model, expanding integration options for developers. The release also includes enhancements to event emission for enqueued messages and new event types for deferred tool calls, providing more granular control over agent execution flows. Several bug fixes address serialization issues, tool binding, and streamed output handling, improving the reliability of AI agent interactions.
feature patch - CrewAI Releases sdkaiengineerpython-agentic ·
crewAI 1.15.3: TUI flows, execution hooks, and bug fixes
This patch release for crewAI introduces several new features, including running declarative flows on the TUI and enhancing execution hook capabilities with interception points. It also addresses multiple bug fixes, such as syncing events, preventing tool execution breakage, and optimizing tool result caching. The release is available now for all users of crewAI.
feature patch - FastAPI Releases sdkengineerpython-web ·
FastAPI 0.139.2 Fixes Router Thread Safety
FastAPI version 0.139.2 includes a refactor to make router route building thread-safe. This change primarily benefits tests running in parallel threads, which is an uncommon but impactful scenario for ensuring stability. The update is a patch release and requires no specific prerequisites for users.
patch - FastAPI Releases sdkengineerpython-web ·
FastAPI 0.139.1 Patches Frontend Fallback and Translations
FastAPI version 0.139.1 includes a fix for frontend fallback support on dotted paths, addressing an issue for developers using such URL structures. This release also updates numerous translations and incorporates various internal dependency bumps and CI workflow improvements. The changes are primarily for users of the FastAPI framework, with no specific prerequisites beyond updating to the latest version.
patch - Pydantic AI Releases sdkaiengineerpython-agentic ·
pydantic-ai v2.11.0 adds exportable history and bug fixes
This release of pydantic-ai introduces an exportable `HistoryProcessor` for better history management and includes several bug fixes. These improvements enhance usability and address validation and schema transformation issues for specific providers like Anthropic and Bedrock. The update is available now for users of the pydantic-ai library.
feature patch - uv Releases sdkpreviewengineer ·
uv 0.11.29: Enhancements, Performance Improvements, and Bug Fixes
This release of uv introduces several enhancements, including JSON output for `uv tree`, support for CUDA 13.2, and preference for local artifacts. Performance has been improved through resolver optimizations and deferred setup for no-op operations. Numerous bug fixes address issues with dependency resolution, package metadata handling, and credential redaction, impacting developers using uv for Python package management.
patch - Pydantic AI Releases sdkaisecuritysecurity-advisoryengineerpython-agentic ·
pydantic-ai v2.10.0: Tool pairing, OpenAI/Anthropic support, bug fixes
Version 2.10.0 of pydantic-ai enhances tool integration by improving message history provider validation and adding support for OpenAI background mode and Anthropic pauses. It also addresses several bugs, including issues with usage details, tool renaming, UTF-8 handling, event-loop affinity, and tool call attachment. A dependency update to `transformers` addresses a security vulnerability, affecting users of these libraries.
feature patch - Pydantic AI Releases sdkaipreviewengineerpython-agentic ·
Pydantic-AI v2.9.0: Security fix, GPT-5.6 models, usage command
Pydantic-AI v2.9.0 addresses a security advisory impacting message sanitization and backports a fix to version 1.107.1. This release also introduces new features like GPT-5.6 model support, a `/usage` command for the `clai` CLI, and exposes `usage_limits` to tools. Several bug fixes improve Anthropic Files API integration, message repr handling, FIPS compliance, agent robustness, and output strategies, affecting users of version 2.0.0 and above.
security feature patch - LangGraph Releases sdkaiengineerpython-agentic ·
LangGraph 1.2.7: Fixes for delta overwrites and UUID generation
LangGraph version 1.2.7 addresses critical issues related to delta channel overwrites and ensures valid UUID generation for exit-mode delta task IDs. These fixes improve the stability and reliability of state management within the graph execution, particularly for complex scenarios involving JSON roundtrips and API interactions. The release also includes dependency updates for libraries like redis and langsmith, affecting users of those components.
patch - Pydantic AI Releases sdkaiengineerpython-agentic ·
pydantic-ai v2.1.0: Anthropic web tools, serialization, and bug fixes
Pydantic-ai has released version 2.1.0, introducing new features like Anthropic web tools for server-tool replay and improved instrumentation message serialization. Several bug fixes are also included, addressing issues with tool errors, streaming behavior, and Bedrock token counting. This release impacts developers integrating AI models with Pydantic, particularly those using Anthropic or Bedrock.
feature patch - Pydantic AI Releases sdkaideprecationmediapython-agentic ·
pydantic-ai v2.5.1: Bug Fixes and Model Compatibility
This patch release for pydantic-ai, version 2.5.1, addresses several bugs and enhances compatibility with various large language model providers. Key fixes include improved handling of tool results, mapping of settings for Groq models, and proper rejection of invalid concurrency settings. The release also ensures better handling of empty model responses and preserves file download settings. These changes benefit developers integrating AI models into their Python applications by stabilizing the library's behavior across different platforms.
patch - CrewAI Releases sdkaiengineerpython-agentic ·
crewAI 1.15.0: Conversational Flow Tracking and Declarative Flow Loading
Version 1.15.0 introduces telemetry tracking for conversational flow turn usage and supports these flows in the CLI TUI. It also adds unified declarative flow loading and CLI support, enhancing how users define and execute complex agent workflows. These changes affect developers and users working with agent orchestration, particularly those leveraging new flow definition capabilities and improved performance.
feature patch - OpenAI Agents SDK (Python) Releases sdkaiengineerpython-agentic ·
OpenAI Agents Python Library v0.17.8: Enhancements and Fixes
This release of the OpenAI Agents Python library, version 0.17.8, includes several bug fixes and minor enhancements. Key changes focus on improving error handling, ensuring proper log redaction, and refining validation logic. These updates are relevant for developers using the library for agent-based applications and are available immediately as a patch release.
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