Gemini CLI PR reveals unreleased gemini-4-argon model with 1M context window
mr8lu · ghdev · 2026-10-22
What happened
PR #29875 in google-gemini/gemini-cli adds support for a gemini-4-argon model, strongly suggesting Google is preparing an unannounced Gemini release.
Details
- Registers gemini-4-argon in VALIDGEMINIMODELS and defaultModelConfigs.ts, re-exported from @google/gemini-cli-core
- Adds isGemini4Model and updates capability checks (isProModel, supportsModernFeatures, multimodal function response support)
- 1M token context window, with updated token limits and chat compression mappings
- Exposes the model in the CLI ModelDialog and ACP manual model options
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