Data
AI coding harnesses
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Claude Code v2.1.269 Released — New Plugin Evaluation Features and Enhanced Agent Management in VSCode
Claude Code v2.1.269 has been released. New features include running plugin evaluation suites with reporting, agent map visualization in VSCode, and improved operational stability across various environments.
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OpenAI Codex Python SDK v0.154.0 Released — Addition of inference Settings and External Message Support
OpenAI Codex has released Python SDK 0.154.0, introducing new values to control the number of attempts for inference, integration of external messages, and new options for history management.
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Claude Code v2.1.268 Released — Expanded Administrative Settings and Bug Fixes Across Environments
Anthropic has released Claude Code v2.1.268, introducing integrated cost management via gateway settings, improved functionality for VSCode and Slack integrations, and various bug fixes.
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Codex CLI v0.154.0 Released — Adding GPT-6-Astra Support and Worktree Integration
Codex CLI v0.154.0 has been released, adding GPT-6-Astra to model selection and introducing experimental isolated checkout functionality via worktrees.
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Claude Code v2.1.267 Released — Effort Level Settings Added and Various Bug Fixes
Claude Code v2.1.267 introduces the maxEffortLevel setting to limit the effort level ceiling for each provider. Additionally, multiple issues related to session resumption, VS Code extensions, and MCP have been resolved.
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OpenCode v1.18.30 Released — Adds System Prompts for GPT-6 and Fixes Various Providers
OpenCode has released v1.18.30, featuring the addition of Astra system prompts for GPT-6 models and fixes for providers including Bedrock, OpenAI, and Azure.
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gemini-cli v0.59.0 Released — Security Fixes and Enhanced Workspace Trust
Gemini CLI has released v0.59.0, featuring fixes including the prevention of SSRF during MCP OAuth metadata discovery and the enforcement of workspace trust in restricted mode.
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codex rust-v0.153.3 Released: GPT-6-Astra Added to Amazon Bedrock and Bug Fixes
codex released rust-v0.153.3 on 2026-09-05. GPT-6-Astra has been added to the model options for Amazon Bedrock, and behavior regarding asynchronous questions has been fixed.
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claude-code v2.1.261 Released — Fixes Input Bugs and Expands Output Limits
Anthropic has released v2.1.261, the latest version of Claude Code. This update includes fixes for character omission during input, expanded output limits, and improved behavior in proxy environments.
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codex rust-v0.153.1 released — Adds support for GPT-6-Astra API configuration
The rust-v0.153.1 release of codex has been made available, adding functionality to configure GPT-6-Astra via API.
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codex rust-v0.153.0 Released — Vim Mode Undo/Redo Support and Plugin CLI Enhancements
OpenAI has released rust-v0.153.0 of the local LLM development tool "codex." The primary changes include the addition of undo/redo functionality in Vim mode and remote marketplace integration via the plugin CLI.
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claude-code v2.1.259 Released — Fixes Parallel Session Conflicts and Bash Permission Control Bugs
Anthropic released v2.1.259 of the local LLM integration tool claude-code on 2026-09-03, fixing major bugs including configuration file corruption in parallel sessions and malfunctions in Bash command Read() denial rules.
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opencode releases v1.18.26 and v1.18.27 in succession, improving Azure sign-in and adjusting timeouts
opencode released v1.18.26 on September 2, 2026, followed by v1.18.27 on the 3rd. These updates include improved stale thinking block resistance for Claude 5, Bedrock bug fixes, changes to the Azure CLI sign-in method, and unified default timeouts for providers and streaming.
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gemini-cli v0.58.0 Released — 5 Bug Fixes Including Docker Socket Isolation for macOS Seatbelt
gemini-cli released v0.58.0 on 2026-09-02, featuring five bug fixes including Docker socket isolation in macOS Seatbelt environments and corrections to symbolic link evaluation for ignore paths.
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Anthropic Releases claude-code v2.1.257, Setting Claude Fable 5.1 as Default and Reducing Complex Task Costs by up to 45%
Anthropic has released version 2.1.257 of its developer tool "claude-code," setting the new "Claude Fable 5.1" as the default Fable model. The company explains that the new model improves performance over Fable 5 while being approximately 25% cheaper normally and up to 45% cheaper for complex agentic tasks.
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codex v0.152.0 Released — Vim Search, MCP Enhancements, and Windows Sandbox Fixes
OpenAI has released version 0.152.0 of codex, its local LLM CLI tool. This update includes the addition of search functionality for Vim mode, MCP-related enhancements, and fixes for the Windows sandbox.
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claude-code v2.1.251 Released — Adds Model Switch Hooks and Security Fixes
Between August 26 and 31, six updates (v2.1.246 to v2.1.252) were released for claude-code. v2.1.251 introduces model switch hooks and live streaming for sub-agents, while fixing a privilege bypass via symbolic links.
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opencode v1.18.23–25 Released — Multi-provider Bug Fixes and Azure Entra ID Sign-in Support
opencode released three consecutive versions from v1.18.23 to v1.18.25 between August 25 and 28, 2026. Key changes include bug fixes for Azure, Bedrock, and Cloudflare AI Gateway, as well as Microsoft Entra ID sign-in support for the Azure provider.
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gemini-cli v0.59.0-nightly Released — MCP SSRF Prevention and Fail-Closed Trust Control
The v0.59.0-nightly versions of gemini-cli (August 27 to September 1, 2026) include fixes for SSRF prevention in MCP OAuth processing and fail-closed trust control in restricted mode.