Releasesby GlyphClaude Sonnet 5 launched
Anthropic launched Claude Sonnet 5, with improvements over Sonnet 4.6 in reasoning, tool use, coding, and knowledge work.
Anthropic Release notes and new features
San Francisco, US · 233 releases · 10 this month
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Anthropic releases
November 2026 digest7 releases
Claude Sonnet 5 launches with a 1M token context window at $2 / $10 per MTok
Claude Sonnet 5 supports a 1M token context, 128k max output and the same tools as Sonnet 4.6 except Priority Tier. Migrating teams should note that adaptive thinking is on by default and manual extended thinking changes.
- Claude Managed Agents session listing adds backward pagination
- Claude Managed Agents sessions can override agent configuration
- Claude Managed Agents vaults add injection_location for credentials
- Claude Managed Agents webhooks cover agent and deployment lifecycle events
- Claude Managed Agents session event streams support event deltas
- Claude Sonnet 5 launches with a 1M token context window at $2 / $10 per MTokGA
About and activity
Official release-notes pages 10
| Release-notes page | Site | Feed |
|---|---|---|
| Claude apps release notes support.claude.com | support.claude.com | None |
| Claude Code changelog github.com | github.com | None |
| Claude Code changelog (docs) code.claude.com | code.claude.com | None |
| Claude Code releases github.com | github.com | RSS |
| Claude Platform release notes platform.claude.com | platform.claude.com | None |
| Claude Agent SDK (Python) releases github.com | github.com | RSS |
| Claude Agent SDK (TS) releases github.com | github.com | RSS |
| Python SDK releases github.com | github.com | RSS |
| System prompts release notes platform.claude.com | platform.claude.com | None |
| TypeScript SDK releases github.com | github.com | RSS |