feat(xai): update model YAMLs [bot]

[models-bot]

Auto-generated by poc-agent for provider xai.

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Note

Low Risk
Provider configuration-only changes to pricing tiers, parameter allowlists, and model status; no application or security logic is modified.

Overview
Updates xAI provider YAML for several Grok models to match current pricing and capability metadata.

Grok 4.20 experimental (grok-4.20-experimental-beta-0304-non-reasoning and grok-4.20-multi-agent-experimental-beta-0304) now define tiered_pricing on cache read, input, and output tokens above 200k tokens (higher per-token rates). The multi-agent variant also sets pricing_mode: cumulative.

grok-4.5-latest adds removeParams: stop, so the stop sequence parameter is no longer exposed for that model.

grok-imagine-image-2.0 is set to status: active.

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Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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Missing cumulative long-context pricing mode

Medium Severity

New tiered_pricing omits pricing_mode, so the schema default marginal applies. xAI bills grok-4.20 long-context requests as a whole-request tier switch, and sibling 4.20 entries set pricing_mode: cumulative. Prompts over 200k tokens are therefore costed too low.

 

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