Model Comparison
GPT-5.5 (high)
vs. M2.5
Comparing 2 AI models · 7 benchmarks · OpenAI, MiniMax
Recommended Pick
Op GPT-5.5 (high) 8 metric wins Strongest on: Reasoning, Intelligence, Coding
Best Value
M2.5
100.0 value score
48.6 reasoning / $0.52/1M
Lowest Price
M2.5
$0.30/1M input price
Best Reasoning
GPT-5.5 (high)
65.0 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-5.5 (high)
58.5 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
M2.5 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
M2.5 is 16.7x cheaper on input tokens than GPT-5.5 (high).
Speed gap
M2.5 generates about 3.6x as many tokens per second as GPT-5.5 (high).
Reasoning gap
GPT-5.5 (high) leads M2.5 by 16.4 points on reasoning.
Coding gap
GPT-5.5 (high) leads M2.5 by 21.1 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
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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M2.5
MiniMax
TTFT
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Time
—
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 Op GPT-5.5 (high) | Mi M2.5 |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $5.00/1M | $0.30/1M |
| Output Cost | $30.00/1M | $1.20/1M |
| Blended (3:1) | $11.25/1M | $0.52/1M |
| Specifications | ||
| Organization | OpenAI | MiniMax |
| Release Date | Apr 23, 2026 | Feb 12, 2026 |
| Performance & Speed | ||
| Throughput | 59.5 tok/s | 216.1 tok/s |
| TTFT | 16773ms | 2482ms |
| Latency | 16773ms | 11737ms |
| Composite Indices | ||
| Value Score | 6.2 | 100.0 |
| Reasoning Score | 65.0 | 48.6 |
| Intelligence | 58.9 | 41.9 |
| Coding | 58.5 | 37.4 |
| Standard Benchmarks | ||
| GPQA | 93.2% | 84.8% |
| HLE | 43.0% | 19.1% |
| SciCode | 55.9% | 42.6% |
| LCR | 73.3% | 66.0% |
| IFBench | 71.6% | 71.6% |
| TAU-bench v2 | 93.0% | 95.3% |
| TerminalBench Hard | 59.8% | 34.8% |
Key Takeaways
M2.5 offers the best value at $0.30/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5.5 (high) has the strongest reasoning profile with a 65.0 reasoning score, combining the available reasoning-heavy benchmarks.
GPT-5.5 (high) reaches a 58.5 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
GPT-5.5 (high)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
M2.5
- Cost-sensitive applications
- High-volume processing
