Daily AI Builder Brief - April 30, 2026

Executive Summary

The 1M context beta retires today on Claude Sonnet 4 and Sonnet 4.5; requests over 200k tokens will return a 400.
Migration path: Sonnet 4.6 or Opus 4.6, both of which serve 1M context at standard pricing with no beta header.
Bedrock and Vertex callers must update model_id and drop the context-1m-2025-08-07 header on the same schedule.
Anthropic joined the Blender Development Fund as Corporate Patron at €240,000 per year, earmarked for Blender core and the Python API.
Blender Lab shipped an MCP server that pairs with yesterday's Claude for Creative Work connector; it can debug scenes and batch-apply changes.
No new Claude Code release in the last 24 hours; latest is still 2.1.123 (OAuth 401 fix from April 29).
No new MCP protocol release; the spec is still on November 2025 with the 2026 roadmap items in review.

Claude Code

Nothing new. Latest is 2.1.123 from April 29. (changelog)

Anthropic

1M context beta retires today

The context-1m-2025-08-07 header stops doing anything on Sonnet 4 and Sonnet 4.5 starting today. Requests over 200k tokens return a 400. Migrate to Sonnet 4.6 or Opus 4.6: both support 1M context at standard pricing with no header. (release notes)

Anthropic joins Blender Development Fund

Anthropic committed €240,000 per year as Corporate Patron, with funding directed at Blender core and the Python API. Blender CEO Francesco Siddi: "This is towards helping Blender itself as a software, this is not an AI takeover." (Blender Foundation)

MCP Ecosystem

Blender MCP server

Blender Lab shipped an MCP server for Claude (and other clients) that debugs scenes and batch-applies changes to objects. It's the protocol layer behind yesterday's creative-work connector. (BlenderNation)

Broader AI

Nothing today.

What This Means For Builders

If a Sonnet 4 or 4.5 workflow depends on long context, today's the cutover: pin Sonnet 4.6 in your model string and drop the beta header before traffic shifts to a 400.
An MCP server is now the preferred distribution channel for any creative or domain tool with a scripting API; Anthropic is paying upstream maintainers to keep those APIs healthy, which is a strong signal for where to invest your own integration effort.
A quiet day on Claude Code means it's a good window to land local config cleanup: prune orphaned plugins, set alwaysLoad on the MCP servers your agents call every turn, and sweep stale beta headers from your codebase.