Releases

Claude Code v2.1.243 introduces significant improvements to usage monitoring, model management, and authentication. Key additions include a Loops breakdown in `/usage` for tracking runaway tasks, a `modelPicker` setting for curating model selections, prompt cache TTL controls, organization-managed pricing, and keyless sign-in via Anthropic Console. The release also includes numerous bug fixes for MCP servers, auto mode, session management, and performance optimizations reducing binary size by ~75% and memory usage by 40-70 MB.

OpenClaw v2026.8.1-beta.3 introduces GPT-5.6 reasoning support across multiple model variants (Sol, Terra, Luna, Ultra) and enhances the Control UI with streamlined first-run setup that integrates model verification into Custodian and optional channel configuration. Key infrastructure improvements include Puppeteer-compatible CDP relay support for Chrome sessions, explicit Gateway lifecycle supervision with verified restart handoff, and compact SQLite backup/restore commands. All 89 official npm plugins have been verified and published with complete integrity metadata.

Claude Code v2.1.239 is a major release featuring improved cost estimation with US-only inference premiums, enhanced cloud session plugin management, Python 3.1.x migration tools, and extensive bug fixes across Bedrock, Alpine/musl builds, proxy handling, IDE integration, and UI rendering. The update addresses 50+ issues including streaming fixes, race conditions, MCP server reliability, and keyboard/mouse input handling in fullscreen mode.

langchain-fireworks version 1.6.0 introduces document reranking capabilities and improves tool call handling by filtering invalid v1 content. The release includes standard model exception types, refreshed model profile data, and dependency updates for langsmith and aiohttp. Key fixes address repeated service_tier parameters and enhance overall stability.

langchain-anthropic version 1.6.1 was released with a critical bug fix that filters invalid tool calls from v1 content. This patch addresses issues with tool call handling in the Anthropic integration for LangChain, improving reliability when processing tool invocations. The release maintains backward compatibility while resolving edge cases in content processing.

Claude Code v2.1.237 introduces two key improvements: a fix for prompt caching compatibility with LLM gateways and custom base URLs, and a new "Concise" output style that prioritizes results over preamble. The Concise mode maintains thorough work while reducing narrative overhead, available in the Output style configuration.

Claude Code v2.1.236 introduces the `ANTHROPIC_DEFAULT_MODEL` environment variable for persistent model selection, adds cross-session idle notifications via `notify_when_idle`, and enhances sandbox security with precedence-based wildcard read-deny rules on macOS. The release fixes 20+ bugs affecting clipboard operations, fullscreen rendering, subprocess handling, and terminal UI consistency, while improving auto mode classification, startup performance, and accessibility with screen reader support.

langchain-anthropic version 1.6.0 introduces standard model exception types for improved error handling across the LangChain framework. The release includes infrastructure improvements for LangSmith gateway support in CI/CD pipelines and fixes a grep search scope issue in the Anthropic integration. This update enhances reliability and consistency in exception handling for Anthropic-based LangChain applications.

langchain-openai version 1.6.0 introduces standard model exception types for improved error handling across the core framework. The release includes a fix that raises clear, informative errors when unexpected response types are encountered in the `_create_chat_result` method. These changes enhance debugging and error transparency for OpenAI integration users.

Release 2026.8.18 of modelcontextprotocol/servers updates four key server packages to version 2026.8.18. The release includes updates to the everything server, time server, fetch server, and git server components. This release maintains consistency across the MCP server ecosystem with synchronized versioning.

langchain-openai version 1.5.2a1 is released with support for extracting gateway metadata from response headers and improved handling of o-series models in token counting. The release includes fixes for streamed encrypted reasoning, invalid tool calls, and context window errors, along with support for the OpenAI 3.0 SDK. Recent versions have added features like explicit prompt caching, ChatGPT OAuth-backed models, and content-block-centric streaming improvements.

Claude Code v2.1.234 introduces environment variable configuration for project directories, GitLab merge request integration, automatic session continuation at usage limits, and significant security hardening against Windows NT-namespace path exploits. The release includes numerous bug fixes for session management, permission handling, markdown rendering, and Remote Control functionality, plus UX improvements for fullscreen mode and mid-turn command execution.

OpenAI Agents Python v0.21.1 is a maintenance release featuring enhanced sandbox capabilities, improved timeout handling, and critical bug fixes across core, chat completions, realtime, and session management. Key additions include model call timeouts, run-scoped sandbox directories, Docker networking controls, and Modal sandbox resource options. The release addresses issues with call approval decisions, audio truncation, path normalization, and SQLite conflicts.

This release contains CPU profiles from a performance testing rig comparing Gateway behavior before and after PR #124528. The profiles were captured from a bounded three-node setup with twelve concurrent turns, focusing on event-loop hotspot analysis. The archive includes representative baseline profiles and exact-head post-PR profiles to enable performance comparison and validation of the changes.

OpenClaw v2026.8.1-beta.2 introduces critical security enhancements with secret egress host binding, expands AI model support (GPT-5.6 Ultra with Sol/Terra/Luna runtimes), and improves plugin lifecycle management through shared SDK monitors. Key additions include SQLite backup/restore capabilities, macOS app profile isolation, and enhanced Control UI reliability with better update recovery. The release strengthens security posture through plugin provenance warnings and trusted-source restrictions while improving user experience across channels, authentication, and workspace management.

OpenAI Agents Python v0.21.0 is a minor release introducing provider-neutral testing APIs and OpenAI Python v3 compatibility. Key additions include new testing utilities for deterministic Agent, Sandbox, Realtime, and Voice workflows without provider requests, updated HTTPX2-aware request handling, and numerous hardening fixes across core, MCP, Sandbox, Realtime, and Voice modules. The release maintains backward compatibility while improving state isolation, error handling, and validation strictness.

Claude Code v2.1.233 introduces GitLab merge request support, optional user identity forwarding for spend attribution, memory limits for Bash tools on Linux, and WebFetch cache configuration. The release includes multiple bug fixes for cloud sessions, MCP v2 connections, permission prompts, CPU usage, skill command handling, and Windows path validation. Several improvements enhance performance, error handling, and accessibility across different platforms and deployment scenarios.

langchain-openrouter version 0.2.8 release includes bug fixes and feature enhancements for OpenRouter integration. Key improvements focus on preserving cost metadata in usage chunks and maintaining provider information in response metadata. Multiple model profile data refreshes ensure up-to-date model configurations across the release cycle.

langchain-openai version 1.5.1 has been released with a critical fix for preserving streamed encrypted reasoning, infrastructure improvements for langsmith gateway CI support, and general release updates. This patch release addresses streaming behavior in OpenAI integrations while enhancing the development infrastructure.

Claude Code v2.1.232 introduces major improvements to subagent forking, cross-session messaging, and security hardening. Key features include default subagent forking with prompt cache inheritance, @-mention syntax for direct session communication, GitLab marketplace support, and numerous security fixes for permission bypasses and credential handling. The release also enhances Remote Control stability, improves managed settings validation, and fixes various UI and performance issues.