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Checked Active: 2026-10-15
Google
Gemini 4 Argon
Google's flagship reasoning model for complex coding, agentic, math and science work.
Evaluation Analysis: Released Oct 13, 2026. Gemini API paid tier only (not on the free tier or the Google AI Pro API plan); in the Gemini app for Google AI Pro and Ultra subscribers. Generally available in GitHub Copilot (Pro+, Max, Business, Enterprise). Trails the top Claude models on Terminal-Bench per GenAI Brief.
Context Window1M tokens (unified input and output)
Input Price / 1M$2.00 (intro, $4.00 from Dec 1)
Output Price / 1M$10.00 (intro, $20.00 from Dec 1)
Release Date2026-10-13
Specs and prices checked 2026-10-15 against the official page.