Google: Gemini 3.1 Pro Preview vs OpenAI: GPT-5.1-Codex-Max
Side-by-side comparison of Google: Gemini 3.1 Pro Preview and OpenAI: GPT-5.1-Codex-Max. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidenceGoogle: Gemini 3.1 Pro Preview leads overall
Google: Gemini 3.1 Pro Preview leads clearly, winning on 3 of 5 dimensions. Choose Google: Gemini 3.1 Pro Preview unless your workflow specifically requires OpenAI: GPT-5.1-Codex-Max's advantages.
Best for with Google: Gemini 3.1 Pro Preview
Best for with OpenAI: GPT-5.1-Codex-Max
Side-by-side
Technical specifications
| Google: Gemini 3.1 Pro Preview | OpenAI: GPT-5.1-Codex-Max | |
|---|---|---|
| Provider | OpenAI | |
| Input price | $2/M | $1/M |
| Output price | $12/M | $10/M |
| Context window | 1.0M | 400K |
| Max output | 66K | 128K |
| Capabilities | Tool useVisionAudioReasoning | Tool useVisionReasoning |
| Released | Feb 19, 2026 | Dec 4, 2025 |
Scoring breakdown
How each dimension compares
Price
OpenAI: GPT-5.1-Codex-Max leadsGoogle: Gemini 3.1 Pro Preview
$2/M in / $12/M out
OpenAI: GPT-5.1-Codex-Max
$1/M in / $10/M out
Context Window
Google: Gemini 3.1 Pro Preview leadsGoogle: Gemini 3.1 Pro Preview
1.0M
OpenAI: GPT-5.1-Codex-Max
400K
Capabilities
Google: Gemini 3.1 Pro Preview leadsGoogle: Gemini 3.1 Pro Preview
4/4 features
OpenAI: GPT-5.1-Codex-Max
3/4 features
Max Output
OpenAI: GPT-5.1-Codex-Max leadsGoogle: Gemini 3.1 Pro Preview
66K
OpenAI: GPT-5.1-Codex-Max
128K
Release Date
Google: Gemini 3.1 Pro Preview leadsGoogle: Gemini 3.1 Pro Preview
Feb 19, 2026
OpenAI: GPT-5.1-Codex-Max
Dec 4, 2025
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