Model Comparison
Gemini 3.5 Flash (high)
vs. GPT-5 mini (high)
Comparing 2 AI models · 10 benchmarks · Google, OpenAI
Recommended Pick
Go Gemini 3.5 Flash (high) 12 metric wins Strongest on: Throughput, TTFT, Latency
Best Value
GPT-5 mini (high)
100.0 value score
65.0 reasoning / $0.69/1M
Lowest Price
GPT-5 mini (high)
$0.25/1M input price
Best Reasoning
GPT-5 mini (high)
65.0 reasoning score
Blends available reasoning benchmarks
Best for Coding
Gemini 3.5 Flash (high)
45.0 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
GPT-5 mini (high) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GPT-5 mini (high) is 6.0x cheaper on input tokens than Gemini 3.5 Flash (high).
Speed gap
Gemini 3.5 Flash (high) generates about 2.4x as many tokens per second as GPT-5 mini (high).
Reasoning gap
GPT-5 mini (high) leads Gemini 3.5 Flash (high) by 2.2 points on reasoning.
Coding gap
Gemini 3.5 Flash (high) leads GPT-5 mini (high) by 9.7 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Gemini 3.5 Flash (high)
TTFT
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Time
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tok/s
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Tokens
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Cost
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GPT-5 mini (high)
OpenAI
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
Full Comparison
| Metric | Top Pick Go Gemini 3.5 Flash (high) | Op GPT-5 mini (high) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.50/1M | $0.25/1M |
| Output Cost | $9.00/1M | $2.00/1M |
| Blended (3:1) | $3.38/1M | $0.69/1M |
| Specifications | ||
| Organization | OpenAI | |
| Release Date | May 19, 2026 | Aug 7, 2025 |
| Performance & Speed | ||
| Throughput | 197.7 tok/s | 83.3 tok/s |
| TTFT | 14619ms | 98512ms |
| Latency | 14619ms | 98512ms |
| Composite Indices | ||
| Value Score | 19.7 | 100.0 |
| Reasoning Score | 62.8 | 65.0 |
| Intelligence | 55.3 | 41.2 |
| Coding | 45.0 | 35.3 |
| Math | — | 90.7 |
| Standard Benchmarks | ||
| GPQA | 92.2% | 82.8% |
| MMLU Pro | — | 83.7% |
| HLE | 41.0% | 19.7% |
| LiveCodeBench | — | 83.8% |
| AIME 2025 | — | 90.7% |
| SciCode | 53.1% | 39.2% |
| LCR | 69.3% | 68.0% |
| IFBench | 76.3% | 75.4% |
| TAU-bench v2 | 95.3% | 68.4% |
| TerminalBench Hard | 40.9% | 33.3% |
Key Takeaways
GPT-5 mini (high) offers the best value at $0.25/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5 mini (high) has the strongest reasoning profile with a 65.0 reasoning score, combining the available reasoning-heavy benchmarks.
Gemini 3.5 Flash (high) reaches a 45.0 coding index, making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Gemini 3.5 Flash (high)
- Code generation
- Software development
GPT-5 mini (high)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
