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AI release notes

Official updates from Anthropic, OpenAI, Google, xAI, Mistral, DeepSeek and Meta, newest first. Open any update for a short AI summary and the full notes.

Compiled by the Toolstash team · Updated

  1. Google · Gemini CLI

    Gemini CLI 0.29.1

    1 fix

    cherry-pick 858918f to release/v0.29.0-pr-19460 to patch version v0.29.0 and create version 0.29.1.

  2. Anthropic · Claude Code

    Claude Code 2.1.47

    3 new53 fixes12 other

    Added last_assistant_message field to Stop and SubagentStop hook inputs, providing the final assistant response text so hooks can access it without parsing transcript files. Added chat:newline keybinding action for configurable multi-line input (anthropics/claude-code#26075).

  3. Google · Gemini CLI

    Gemini CLI 0.29.0

    47 new35 fixes81 other

    unify workflow location in system prompt to optimize caching. enable getUserTierName in config.

  4. Google · Gemini API

    Deprecation announcement: The following models will be shut down June 1, 2026: gemini-2.0-flash…

    Deprecation announcement: The following models will be shut down June 1, 2026: gemini-2.0-flash gemini-2.0-flash-001 gemini-2.0-flash-lite gemini-2.0-flash-lite-001

  5. Anthropic · Claude Code

    Claude Code 2.1.45

    4 new7 fixes4 other

    Added support for Claude Sonnet 4.6. Added support for reading enabledPlugins and extraKnownMarketplaces from --add-dir directories.

  6. Anthropic · Claude API

    We’ve launched Claude Sonnet 4.6, our latest balanced model combining speed and intelligence for everyday…

    Sonnet 4.6 delivers improved agentic search performance while consuming fewer tokens. Sonnet 4.6 supports extended thinking and a 1M token context window (beta). API code execution is now free when used with web search or web fetch. The web search tool and programmatic tool calling are available with no beta header required. The code execution tool, web fetch tool, tool search tool, tool use examples, and memory tool no longer require a beta header.

  7. Anthropic · Claude appsAnnouncement

    Claude Sonnet 4.6 launch

    We launched our most capable Sonnet model yet, with a full upgrade of the model’s skills across coding, computer use, long-context reasoning, agent planning, knowledge work, and design. Sonnet 4.6 also features a 1M token context window in beta. Read our blog post for more information: Introducing Claude Sonnet 4.6.

  8. OpenAI · Codex app

    Codex app

    Added drag-and-drop support to reorder queued messages. Added a warning when the selected model is downgraded. Improved file workflows with fuzzy file search and better attachment recovery after restart. Additional performance improvements and bug fixes.

  9. Google · Gemini API

    The following models are shut down: gemini-2.5-flash-preview-09-25 imagen-4.0-generate-preview-06-06…

    The following models are shut down: gemini-2.5-flash-preview-09-25 imagen-4.0-generate-preview-06-06 imagen-4.0-ultra-generate-preview-06-06

  10. Anthropic · Claude Code

    Claude Code 2.1.44

    1 fix

    Fixed auth refresh errors.

  11. Anthropic · Claude Code

    Claude Code 2.1.42

    2 fixes1 other

    Fixed /resume showing interrupt messages as session titles. Fixed Opus 4.6 launch announcement showing for Bedrock/Vertex/Foundry users.

  12. Anthropic · Claude Code

    Claude Code 2.1.41

    2 new11 fixes2 other

    Added claude auth login, claude auth status, and claude auth logout CLI subcommands. Added Windows ARM64 (win32-arm64) native binary support.

  13. Anthropic · Claude apps

    Analytics API for Enterprise plans

    The Enterprise Analytics API provides programmatic access to usage and engagement data for Claude and Claude Code Remote usage within your organization. Data is aggregated per organization, per day, and each endpoint returns a snapshot for a single date that you specify.

  14. Anthropic · Claude appsAnnouncement

    Self-serve Enterprise plans

    Previously, Enterprise plans were only available to customers working with our Sales team. Now, any organization can purchase an Enterprise plan directly on our website with no Sales conversation required. Self-serve Enterprise plans have a single seat type that includes access to Claude, Claude Code, and Cowork.

  15. OpenAI · Codex appAnnouncement

    Codex app

    Support for GPT-5.3-Codex-Spark. Added floating pop-out window to take a conversation with you. Improved performance and bug fixes. Alpha testing for the Codex app on Windows is also starting. Sign up here to be a potential alpha tester.

  16. OpenAI · New modelAnnouncement

    Introducing GPT-5.3-Codex-Spark

    Today, we're releasing a research preview of GPT-5.3-Codex-Spark, a smaller version of GPT-5.3-Codex and our first model designed for real-time coding. Codex-Spark is optimized to feel near-instant, delivering more than 1000 tokens per second while remaining highly capable for real-world coding tasks. Codex-Spark is available in research preview for ChatGPT Pro users in the latest Codex app, CLI, and IDE extension. This release also marks the first milestone in our partnership with Cerebras. At launch, Codex-Spark is text-only with a 128k context window. During the research preview, usage has separate model-specific limits and doesn't count against standard Codex limits. During high demand, access may slow down or queue while we balance reliability across users. To switch to GPT-5.3-Codex-Spark: In the CLI, start a new thread with: bash codex --model gpt-5.3-codex-spark Or use /model during a session. In the IDE extension, choose GPT-5.3-Codex-Spark from the model selector in the composer. In the Codex app, choose GPT-5.3-Codex-Spark from the model selector in the composer. If you don't see GPT-5.3-Codex-Spark yet, update the CLI, IDE extension, or Codex app to the latest version. GPT-5.3-Codex-Spark isn't available in the API at launch. For API-key workflows, continue using gpt-5.2-codex.

  17. Google · Gemini app

    Solve modern science, research and engineering challenges with Gemini 3 Deep Think

    What: We’re releasing a major upgrade to Gemini 3 Deep Think, our specialized reasoning mode, built to push the frontier of intelligence and solve modern challenges across science, research, and engineering. By blending deep scientific knowledge with everyday engineering utility, Deep Think now moves beyond abstract theory to help drive practical applications. This update is available to Google AI Ultra Subscribers in the Gemini App. To access, select “Deep Think” in the prompt bar. Once you submit your task, Gemini will let you know when your response is ready – generally in a few minutes. Why: We're committed to bringing Google's latest AI innovations faster to Google AI Ultra users, including our most powerful reasoning capabilities to help you tackle even more complex problems.

  18. Google · Gemini CLI

    Gemini CLI 0.28.2

    1 fix

    cherry-pick e9a9474 to release/v0.28.1-pr-18840 [CONFLICTS].

  19. Google · Gemini CLI

    Gemini CLI 0.28.1

    1 fix

    cherry-pick 37f128a to release/v0.28.0-pr-18478.

  20. Anthropic · Claude Code

    Claude Code 2.1.39

    4 fixes1 other

    Improved terminal rendering performance. Fixed fatal errors being swallowed instead of displayed.

  21. Google · Gemini CLI

    Gemini CLI 0.28.0

    45 new33 fixes65 other

    add /prompt-suggest slash command. align hooks enable/disable with skills and improve completion.

  22. Google · Gemini CLI

    Gemini CLI 0.27.4

    1 fix

    cherry-pick 37f128a to release/v0.27.3-pr-18478 [CONFLICTS].

  23. Anthropic · Claude Code

    Claude Code 2.1.38

    5 fixes2 other

    Fixed VS Code terminal scroll-to-top regression introduced in 2.1.37. Fixed Tab key queueing slash commands instead of autocompleting.

  24. OpenAI · Codex app

    Codex app

    Added branch search in the branch picker. Added clearer guidance for entering plan mode when you type plan in the composer. Added support for parallel approvals. Additional performance improvements and bug fixes.

  25. OpenAI · New model

    GPT-5.3-Codex in Cursor and VS Code

    Starting today, GPT-5.3-Codex is available natively in Cursor and VS Code. API access is starting with a small set of customers as part of a phased release. This is the first model treated as a high security capability under the Preparedness Framework. Safety controls will continue to scale, and API access will expand over the next few weeks.

  26. OpenAI · Codex app

    Codex app

    Added MCP and personality actions to the command palette. Updated follow-up behavior to queue by default. Additional performance improvements and bug fixes.

  27. Anthropic · Claude Code

    Claude Code 2.1.37

    1 fix

    Fixed an issue where /fast was not immediately available after enabling /extra-usage.

  28. Anthropic · Claude Code

    Claude Code 2.1.36

    1 other

    Fast mode is now available for Opus 4.6. Learn more at https://code.claude.com/docs/en/fast-mode.

  29. Anthropic · Claude API

    We’ve launched fast mode in research preview for Opus 4.6, providing significantly faster output token…

    Fast mode is up to 2.5x as fast at premium pricing. Interested customers should join the waitlist.

  30. Google · Gemini CLI

    Gemini CLI 0.27.3

    1 fix

    cherry-pick 1cae5ab to release/v0.27.2-pr-18376 to patch version v0.27.2 and create version 0.27.3.