AI releases in April 2026

In April 2026, we tracked 80 releases from 14 companies. That is down 84 from March 2026 (164). Kilo Code shipped the most (24), then Anthropic (12) and Google Gemini (11).

Releases

80

March 2026: 164

Companies shipping

14

March 2026: 30

Most shipped

Developer Tools

42 releases

Key launches in April 2026

  • Model

    Mistral AI

    Mistral Medium 3.5 Release

    We released Mistral Medium 3.5 ( mistral-medium-3-5 ), our frontier-class multimodal model optimized for agentic and coding use cases, with adjustable reasoning via the reasoning_effort parameter. Released as open weights under a Modified MIT license.

  • Model

    OpenAI

    GPT-5.5 and GPT-5.5 Pro

    Released GPT-5.5 , a new frontier model for complex professional work, to the Chat Completions and Responses API, and released GPT-5.5 Pro for Responses API requests for tougher problems that benefit from more compute. GPT-5.5 supports a 1M token context window, image input, str…

  • Model

    Mistral AI

    open-mixtral-8x22b Release

    Released open-mixtral-8x22b (aka open-mixtral-8x22b-2404).

  • Model

    xAI

    Grok Voice Think Fast 1.0

    You can now use grok-voice-think-fast-1.0 with the Speech to Speech API. To get started, check out the Speech to Speech docs. For more details, see our blog post .

  • Model

    OpenAI

    GPT-5.5 in Codex, browser use and automatic approval reviews

    GPT-5.5 is now available in Codex as OpenAI’s newest frontier model for complex coding, computer use, knowledge work, and research workflows. GPT-5.5 in Codex GPT-5.5 is the recommended choice for most Codex tasks when it appears in your model picker.

  • Model

    Anthropic

    Claude Opus 4.7 launch

    Claude Opus 4.7 launch with improvements in software engineering and vision capabilities

  • Model

    Runway

    Seedance 2.0

    Use anything-text, image, video or audio-to generate or edit videos with Seedance 2.0. Now available on Unlimited and Enterprise plans outside the US.

  • Model

    Anthropic

    Claude Mythos Preview research preview

    Claude Mythos Preview is available as a gated, invitation-only research preview for defensive cybersecurity work as part of Project Glasswing.

Who shipped most

Releases per company in April 2026. Each name opens that company's April 2026 changelog.

Through the month

Releases by day of the month, across every company. A longer bar is a busier stretch.

  • Days 1–717
  • Days 8–1415
  • Days 15–2120
  • Days 22–2820
  • Days 29–308

By category

  • Developer Tools42
  • Product18
  • Model11
  • API5
  • Infrastructure3
  • Enterprise & Security1

Every AI release in April 2026

Grouped by company, busiest first, with each company's latest releases. Titles open the entry on the company's month page; source links go to the official announcement.

4 more companies · 4 releases

April 2026 AI releases FAQ

What AI models were released in April 2026?

Model releases we tracked in April 2026 include Mistral Medium 3.5 Release from Mistral AI (April 28, 2026), open-mixtral-8x22b Release from Mistral AI (April 24, 2026) and Claude Opus 4.7 launch from Anthropic (April 16, 2026). Each one is listed below with a link to the official announcement.

Which AI company shipped the most in April 2026?

Kilo Code shipped the most, with 24 releases, mostly Developer Tools. Anthropic was next with 12.

How many AI releases were there in April 2026?

We tracked 80 releases from 14 companies in April 2026. A release is one announced change, so a major model launch and a small fix each count once.

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