GoogleGemini 3 FlashVSOpenAIGPT-5.4 nano
Our Take
We recommend Gemini 3 Flash for complex multi-file code and clearly defined tasks, or the 2.4x cheaper GPT-5.4 nano if your budget requires optimizing costs for very high-volume pipelines. While Gemini 3 Flash offers a clear reasoning advantage, it carries a moderate price premium. Choose Gemini 3 Flash for multi-file code and clearly defined tasks, or GPT-5.4 nano to save on API costs for simple scripts.
▶WHY?
Benchmark Calculations & Evidence:
Coding Evaluation: Gemini 3 Flash was evaluated on SWE-bench Verified (scoring 78%), while GPT-5.4 nano was evaluated on SWE-bench Pro (scoring 52.4%).
Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. Gemini 3 Flash scored 90.4%, while GPT-5.4 nano scored 82.8%.
Cost Efficiency: GPT-5.4 nano pricing ($0.2/M input, $1.25/M output) is 2.4x cheaper than Gemini 3 Flash ($0.5/M input, $3/M output).
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Benchmarks & Scores
Coding (swe-bench-verified)
78%multi-file code and clearly defined tasks
Reasoning (gpqa-diamond)Winner (+7.6%)
90.4%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$1.13Input: $0.50 | Output: $3.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)
52.4%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
82.8%graduate-level science QA
Cost & Context
Cost (per 1M tokens)2.4x cheaper
$0.46Input: $0.20 | Output: $1.25Context Window
400k tokensFrequently Asked Questions about Gemini 3 Flash vs GPT-5.4 nano
GPT-5.4 nano is cheaper than Gemini 3 Flash. GPT-5.4 nano has a blended cost of $0.46/1M tokens, which is about 2.4x cheaper than Gemini 3 Flash at $1.13/1M tokens.
For coding tasks, Gemini 3 Flash scores 78% on swe-bench-verified (multi-file code and clearly defined tasks), while GPT-5.4 nano scores 52.4% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning).
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