Gemini 3.1 Flash vs GPT-5.3-Codex-Spark
Google Gemini 3.1 Flash | OpenAI GPT-5.3-Codex-Spark | |
|---|---|---|
| Overview | ||
| Company | OpenAI | |
| Release date | Feb 26 2026 | Feb 12 2026 |
| Access | Proprietary | Proprietary |
| Specifications | ||
Context window | — | 128k |
| Timeline | ||
| Release gap | GPT-5.3-Codex-Spark shipped 14 days before Gemini 3.1 Flash | |
Which is better: Gemini 3.1 Flash or GPT-5.3-Codex-Spark?
Gemini 3.1 Flash and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-5.3-Codex-Spark shipped 14 days before Gemini 3.1 Flash, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — Gemini 3.1 Flash and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemini 3.1 Flash was released by Google on Feb 26 2026.
GPT-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
Other comparisons
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