Model Comparison
Mercury 2
vs. Gemini 3.1 Pro Preview
Comparing 2 AI models · 7 benchmarks · Inception, Google
Recommended Pick
Go Gemini 3.1 Pro Preview 10 metric wins Strongest on: Reasoning, Intelligence, Coding
Best Value
Mercury 2
100.0 value score
41.8 reasoning / $0.38/1M
Lowest Price
Mercury 2
$0.25/1M input price
Best Reasoning
Gemini 3.1 Pro Preview
65.3 reasoning score
Blends available reasoning benchmarks
Best for Coding
Gemini 3.1 Pro Preview
55.5 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
Mercury 2 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Mercury 2 is 8.0x cheaper on input tokens than Gemini 3.1 Pro Preview.
Speed gap
Mercury 2 generates about 7.3x as many tokens per second as Gemini 3.1 Pro Preview.
Reasoning gap
Gemini 3.1 Pro Preview leads Mercury 2 by 23.6 points on reasoning.
Coding gap
Gemini 3.1 Pro Preview leads Mercury 2 by 24.9 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Mercury 2
Inception
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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Gemini 3.1 Pro Preview
TTFT
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Time
—
tok/s
—
Tokens
—
Cost
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Which answer was more useful?
Full Comparison
| Metric | In Mercury 2 | Top Pick Go Gemini 3.1 Pro Preview |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.25/1M | $2.00/1M |
| Output Cost | $0.75/1M | $12.00/1M |
| Blended (3:1) | $0.38/1M | $4.50/1M |
| Specifications | ||
| Organization | Inception | |
| Release Date | Feb 20, 2026 | Feb 19, 2026 |
| Performance & Speed | ||
| Throughput | 968.4 tok/s | 132.2 tok/s |
| TTFT | 3507ms | 24249ms |
| Latency | 3507ms | 24249ms |
| Composite Indices | ||
| Value Score | 100.0 | 13.0 |
| Reasoning Score | 41.8 | 65.3 |
| Intelligence | 32.8 | 57.2 |
| Coding | 30.6 | 55.5 |
| Standard Benchmarks | ||
| GPQA | 77.0% | 94.1% |
| HLE | 15.5% | 44.7% |
| SciCode | 38.7% | 58.9% |
| LCR | 36.3% | 72.7% |
| IFBench | 69.8% | 77.1% |
| TAU-bench v2 | 70.8% | 95.6% |
| TerminalBench Hard | 26.5% | 53.8% |
Key Takeaways
Mercury 2 offers the best value at $0.25/1M, making it ideal for high-volume applications and cost-conscious projects.
Gemini 3.1 Pro Preview has the strongest reasoning profile with a 65.3 reasoning score, combining the available reasoning-heavy benchmarks.
Gemini 3.1 Pro Preview reaches a 55.5 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
Mercury 2
- Cost-sensitive applications
- High-volume processing
Gemini 3.1 Pro Preview
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
