Gemini 3.5 Flash CybervsGPT-5.4 mini
Gemini 3.5 Flash Cyber | GPT-5.4 mini | |
|---|---|---|
| Specifications | ||
Context window | — | 400k |
| 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. | — | 32% |
Browser agent BU BenchCan the AI drive a real web browser to finish tasks — clicking, filling forms, and navigating sites the way a person would? Run by Browser Use on their BU Bench task set. Higher is better. | — | 36% |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1398 |
| Timeline | ||
| Release gap | GPT-5.4 mini shipped 126 days before Gemini 3.5 Flash Cyber | |
| Overview | ||
| Company | OpenAI | |
| Release date | Jul 21 2026 | Mar 17 2026 |
| Access | Proprietary | Proprietary |
Which is better: Gemini 3.5 Flash Cyber or GPT-5.4 mini?
Gemini 3.5 Flash Cyber and GPT-5.4 mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-5.4 mini shipped 126 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-5.4 mini 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-5.4 mini was released by OpenAI on Mar 17 2026.
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