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Gemini 4 Argon vs GPT-5.1-Codex-Max

Both have similar output pricing, while Gemini 4 Argon offers a larger context window. Choose Gemini 4 Argon or GPT-5.1-Codex-Max based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecGemini 4 ArgonGPT-5.1-Codex-Max
ProviderGoogleOpenAI
Input / 1M tokens$2.00$1.25
Output / 1M tokens$10.00$10.00
Context window1M400K
Parameters——
Open weights—No
Released—Nov 2025
LMArena (Chatbot Arena) Elo score1532—
LMArena WebDev Elo score1678—
GPQA Diamond score96.4—
Epoch Capabilities Index score166—
LiveBench score—74.4

FAQ

Is Gemini 4 Argon or GPT-5.1-Codex-Max cheaper?

Gemini 4 Argon and GPT-5.1-Codex-Max have comparable output pricing.

Which has the larger context window, Gemini 4 Argon or GPT-5.1-Codex-Max?

Gemini 4 Argon has the larger context window (1M tokens).

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.