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Gemini 3 Flash

VS
OpenAI

GPT-5.4 mini

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, GPT-5.4 mini is the premium intelligence choice, scoring 19.8% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: Gemini 3 Flash is 1.5x cheaper to run. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Gemini 3 Flash offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of GPT-5.4 mini fully justifies the cost.

Model Specs

Gemini 3 Flash

Benchmarks & Scores

Coding (swe-bench-pro)
34.6%
Reasoning (gpqa-diamond)Winner (+2.9%)
90.4%

Cost & Performance

Cost (per 1M tokens)1.5x cheaper
$1.13Input: $0.50 | Output: $3.00
Speed
159 tps
Context WindowLarger
1M tokens
Model Specs

GPT-5.4 mini

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+19.8%)
54.4%
Reasoning (gpqa-diamond)
87.5%

Cost & Performance

Cost (per 1M tokens)
$1.69Input: $0.75 | Output: $4.50
Speed1.3x faster
201 tps
Context Window
400k tokens
Read our data collection methodology

Frequently Asked Questions

Gemini 3 Flash is cheaper than GPT-5.4 mini. Gemini 3 Flash has a blended cost of $1.13/1M tokens, which is about 1.5x cheaper than GPT-5.4 mini at $1.69/1M tokens.

GPT-5.4 mini is faster than Gemini 3 Flash. GPT-5.4 mini generates 201 tokens per second (tps) compared to Gemini 3 Flash which generates 159 tokens per second.

GPT-5.4 mini is better for coding tasks. It scores 54.4% on coding evaluations (swe-bench-pro) compared to Gemini 3 Flash which scores 34.6%.

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