Anthropic changelog: April 2026

12 releases from Apr 7 to April 29, 2026

Everything Anthropic shipped in April 2026, collected from official Anthropic sources. Each entry is dated and links to the page it came from.

April 2026 at a glance

April 2026 was Anthropic's busiest month of the 12 months to then: 12 releases, about 2.7× its monthly average of 4. That was the same number as in March 2026. Most were Developer Tools (6), followed by Model (2) and Product (2).

Releases

+0 vs March 2026

Rank of 12 months

1st

Average 4.4 a month

Most shipped

Developer Tools

6 releases

Notable Anthropic launches in April 2026

ModelApr 16
Claude Opus 4.7 launch
Claude Opus 4.7 launch with improvements in software engineering and vision capabilities
Source: Claude Help Center Release Notes
ModelApr 7
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.
Source: Claude Platform Release Notes
ProductApr 17
Claude Design by Anthropic Labs
Claude Design launched as an Anthropic Labs product for visual collaboration
Source: Claude Help Center Release Notes

All Anthropic releases in April 2026

Newest first. Each entry links to the official page it came from.

April 202612 releases

Apr 29

Claude API Skill Release

Released Claude API skill for building on Messages API and Managed Agents

Claude APIDeveloper ToolsSource: Claude Platform Release Notes

Apr 24

Rate Limits API Launch

Programmatically query organization rate limits via new API

Claude APIDeveloper ToolsSource: Claude Platform Release Notes

Apr 23

Managed Agents Memory Beta

Public beta for memory feature in Claude Managed Agents

Claude APIDeveloper ToolsSource: Claude Platform Release Notes

Apr 17

Claude Design by Anthropic Labs

Claude Design launched as an Anthropic Labs product for visual collaboration

Claude appProductSource: Claude Help Center Release Notes

Apr 16

Claude Opus 4.7 launch

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

Claude modelsModelSource: Claude Help Center Release Notes

Apr 9

Role-based access controls for Enterprise plans

Admins can now organize users into groups, manually or via SCIM from your identity provider, and assign each group a custom role defining which Claude capabilities its members can use. Turn Claude Cowork on for specific teams, restrict features by department and adjust as adopti…

Claude EnterpriseEnterprise & SecuritySource: Claude Help Center Release Notes

Apr 9

Claude Cowork generally available

Claude Cowork generally available with new analytics and OpenTelemetry support

Claude CoworkProductSource: Claude Help Center Release Notes

Apr 9

Advisor Tool Beta Launch

Public beta for advisor tool that pairs executor and advisor models

Claude APIDeveloper ToolsSource: Claude Platform Release Notes

Apr 8

Claude Managed Agents public beta

Public beta for Claude Managed Agents with secure sandboxing and streaming

Claude APIDeveloper ToolsSource: Claude Platform Release Notes

Apr 8

ant CLI Release

Launched ant CLI for faster Claude API interaction and resource management

Claude APIDeveloper ToolsSource: Claude Platform Release Notes

Apr 7

Messages API on Amazon Bedrock

Messages API available on Amazon Bedrock as research preview

Claude APIInfrastructureSource: Claude Platform Release Notes

Apr 7

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.

Claude APIModelSource: Claude Platform Release Notes

Where April 2026 sits

Anthropic releases per month, for April 2026 and the 11 months before it. A taller bar means more releases that month; the dated entries for each month are on its own page.