Teknium 05d8f11085 fix(/model): show provider-enforced context length, not raw models.dev (#15438) ...

/model gpt-5.5 on openai-codex showed 'Context: 1,050,000 tokens' because
the display block used ModelInfo.context_window directly from models.dev.
Codex OAuth actually enforces 272K for the same slug, and the agent's
compressor already runs at 272K via get_model_context_length() — so the
banner + real context budget said 272K while /model lied with 1M.

Route the display context through a new resolve_display_context_length()
helper that always prefers agent.model_metadata.get_model_context_length
(which knows about Codex OAuth, Copilot, Nous caps) and only falls back
to models.dev when that returns nothing.

Fix applied to all 3 /model display sites:
  cli.py _handle_model_switch
  gateway/run.py picker on_model_selected callback
  gateway/run.py text-fallback confirmation

Reported by @emilstridell (Telegram, April 2026).

2026-04-24 17:21:38 -07:00

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