Gemini 3.5 Flash CybervsGPT-5-Codex
Gemini 3.5 Flash Cyber | GPT-5-Codex | |
|---|---|---|
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 39% |
| Timeline | ||
| Release gap | GPT-5-Codex shipped 309 days before Gemini 3.5 Flash Cyber | |
| Overview | ||
| Company | OpenAI | |
| Release date | Jul 21 2026 | Sep 15 2025 |
| Access | Proprietary | Proprietary |
Which is better: Gemini 3.5 Flash Cyber or GPT-5-Codex?
Gemini 3.5 Flash Cyber and GPT-5-Codex don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-5-Codex shipped 309 days before Gemini 3.5 Flash Cyber, 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 3.5 Flash Cyber and GPT-5-Codex don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemini 3.5 Flash Cyber was released by Google on Jul 21 2026.
GPT-5-Codex was released by OpenAI on Sep 15 2025.
Other comparisons
Gemini 3.5 Flash CybervsClaude Sonnet 5GPT-5-CodexvsClaude Sonnet 5Gemini 3.5 Flash CybervsMuse Spark 1.1GPT-5-CodexvsMuse Spark 1.1Gemini 3.5 Flash CybervsGrok 4.5GPT-5-CodexvsGrok 4.5Gemini 3.5 Flash CybervsDeepSeek-V4-ProGPT-5-CodexvsDeepSeek-V4-ProGemini 3.5 Flash CybervsMistral Medium 3.5GPT-5-CodexvsMistral Medium 3.5Gemini 3.5 Flash CybervsKimi K3GPT-5-CodexvsKimi K3