MiniMax-M3: /anthropic endpoint reports 200K context instead of 1M — Claude Code compacts early

[kemaltachgulyyev-a11y]

Hi MiniMax team,

I'm using MiniMax-M3 via Claude Code with the Anthropic-compatible endpoint (api.minimax.io/anthropic).

Issue: Claude Code shows a 200K context window instead of M3's actual 1M, and triggers autocompact at ~167K.

Root cause: Your /anthropic compatibility layer appears to be returning 200K in the model metadata for MiniMax-M3 — likely inheriting Claude Sonnet's context_window value. Claude Code trusts this metadata and caps its budget accordingly, ignoring the actual 1M capability of M3.

Requested fix: Please update the model metadata returned by the /anthropic endpoint so that MiniMax-M3 reports:

context_window: 1000000

Config I'm using (for reference):
ANTHROPIC_BASE_URL: https://api.minimax.io/anthropic
ANTHROPIC_MODEL: MiniMax-M3

Thank you.