Model Comparison
Gemini 3 Pro Preview (low)
vs. GPT-5.5 (high)
Comparing 2 AI models · 10 benchmarks · Google, OpenAI
Recommended Pick
Op GPT-5.5 (high) 9 metric wins Strongest on: Throughput, Intelligence, GPQA
Best Value
Gemini 3 Pro Preview (low)
100.0 value score
64.6 reasoning / $4.50/1M
Lowest Price
Gemini 3 Pro Preview (low)
$2.00/1M input price
Best Reasoning
Gemini 3 Pro Preview (low)
64.6 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-5.5 (high)
71.6 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
Gemini 3 Pro Preview (low) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Gemini 3 Pro Preview (low) is 2.5x cheaper on input tokens than GPT-5.5 (high).
Reasoning gap
Gemini 3 Pro Preview (low) leads GPT-5.5 (high) by 1.5 points on reasoning.
Top-pick rationale
GPT-5.5 (high) wins 9 measurable categories, including Throughput, Intelligence, GPQA, HLE.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Gemini 3 Pro Preview (low)
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-5.5 (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?
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Full Comparison
| Metric | Go Gemini 3 Pro Preview (low) | Top Pick Op GPT-5.5 (high) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $2.00/1M | $5.00/1M |
| Output Cost | $12.00/1M | $30.00/1M |
| Blended (3:1) | $4.50/1M | $11.25/1M |
| Specifications | ||
| Organization | OpenAI | |
| Release Date | Nov 18, 2025 | Apr 23, 2026 |
| Performance & Speed | ||
| Throughput | — | 75.7 tok/s |
| TTFT | — | 14725ms |
| Latency | — | 14725ms |
| Composite Indices | ||
| Value Score | 100.0 | 39.1 |
| Reasoning Score | 64.6 | 63.1 |
| Intelligence | 33.1 | 53.1 |
| Coding | — | 71.6 |
| Math | 86.7 | — |
| Standard Benchmarks | ||
| GPQA | 88.7% | 93.2% |
| MMLU Pro | 89.5% | — |
| HLE | 27.6% | 43.0% |
| LiveCodeBench | 85.7% | — |
| AIME 2025 | 86.7% | — |
| SciCode | 49.9% | 55.9% |
| LCR | 67.3% | 73.3% |
| IFBench | 49.7% | 71.6% |
| TAU-bench v2 | 68.1% | 93.0% |
| TerminalBench Hard | 34.1% | 59.8% |
Key Takeaways
Gemini 3 Pro Preview (low) offers the best value at $2.00/1M, making it ideal for high-volume applications and cost-conscious projects.
Gemini 3 Pro Preview (low) has the strongest reasoning profile with a 64.6 reasoning score, combining the available reasoning-heavy benchmarks.
GPT-5.5 (high) reaches a 71.6 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 Pro Preview (low)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
GPT-5.5 (high)
- Code generation
- Software development
