Model Comparison
Gemini 3 Pro Preview (high)
vs. GPT-5.5 (xhigh)
Comparing 2 AI models · 10 benchmarks · Google, OpenAI
Recommended Pick
Op GPT-5.5 (xhigh) 9 metric wins Strongest on: Throughput, Intelligence, Coding
Best Value
Gemini 3 Pro Preview (high)
100.0 value score
73.6 reasoning / $4.50/1M
Lowest Price
Gemini 3 Pro Preview (high)
$2.00/1M input price
Best Reasoning
Gemini 3 Pro Preview (high)
73.6 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-5.5 (xhigh)
59.1 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 (high) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Gemini 3 Pro Preview (high) is 2.5x cheaper on input tokens than GPT-5.5 (xhigh).
Reasoning gap
Gemini 3 Pro Preview (high) leads GPT-5.5 (xhigh) by 7.6 points on reasoning.
Coding gap
GPT-5.5 (xhigh) leads Gemini 3 Pro Preview (high) by 12.6 points on coding.
Top-pick rationale
GPT-5.5 (xhigh) wins 9 measurable categories, including Throughput, Intelligence, Coding, GPQA.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Gemini 3 Pro Preview (high)
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
GPT-5.5 (xhigh)
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Full Comparison
| Metric | Go Gemini 3 Pro Preview (high) | Top Pick Op GPT-5.5 (xhigh) |
|---|---|---|
| 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 | — | 55.0 tok/s |
| TTFT | — | 78705ms |
| Latency | — | 78705ms |
| Composite Indices | ||
| Value Score | 100.0 | 35.9 |
| Reasoning Score | 73.6 | 66.0 |
| Intelligence | 48.4 | 60.2 |
| Coding | 46.5 | 59.1 |
| Math | 95.7 | — |
| Standard Benchmarks | ||
| GPQA | 90.8% | 93.5% |
| MMLU Pro | 89.8% | — |
| HLE | 37.2% | 44.3% |
| LiveCodeBench | 91.7% | — |
| AIME 2025 | 95.7% | — |
| SciCode | 56.1% | 56.1% |
| LCR | 70.7% | 74.3% |
| IFBench | 70.4% | 75.9% |
| TAU-bench v2 | 87.1% | 93.9% |
| TerminalBench Hard | 41.7% | 60.6% |
Key Takeaways
Gemini 3 Pro Preview (high) offers the best value at $2.00/1M, making it ideal for high-volume applications and cost-conscious projects.
Gemini 3 Pro Preview (high) has the strongest reasoning profile with a 73.6 reasoning score, combining the available reasoning-heavy benchmarks.
GPT-5.5 (xhigh) reaches a 59.1 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 (high)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
GPT-5.5 (xhigh)
- Code generation
- Software development
