Model Comparison
MiMo-V2.5-Pro
vs. GPT-5.5 (xhigh)
Comparing 2 AI models · 7 benchmarks · Xiaomi, OpenAI
Recommended Pick
Op GPT-5.5 (xhigh) 9 metric wins Strongest on: Throughput, Reasoning, Intelligence
Best Value
MiMo-V2.5-Pro
100.0 value score
54.2 reasoning / $0.54/1M
Lowest Price
MiMo-V2.5-Pro
$0.43/1M input price
Best Reasoning
GPT-5.5 (xhigh)
64.2 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
MiMo-V2.5-Pro has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
MiMo-V2.5-Pro is 11.5x cheaper on input tokens than GPT-5.5 (xhigh).
Speed gap
GPT-5.5 (xhigh) generates about 1.6x as many tokens per second as MiMo-V2.5-Pro.
Reasoning gap
GPT-5.5 (xhigh) leads MiMo-V2.5-Pro by 10.0 points on reasoning.
Coding gap
GPT-5.5 (xhigh) leads MiMo-V2.5-Pro by 13.6 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
MiMo-V2.5-Pro
Xiaomi
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 (xhigh)
OpenAI
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 | Xi MiMo-V2.5-Pro | Top Pick Op GPT-5.5 (xhigh) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.43/1M | $5.00/1M |
| Output Cost | $0.87/1M | $30.00/1M |
| Blended (3:1) | $0.54/1M | $11.25/1M |
| Specifications | ||
| Organization | Xiaomi | OpenAI |
| Release Date | Apr 22, 2026 | Apr 23, 2026 |
| Performance & Speed | ||
| Throughput | 40.7 tok/s | 66.6 tok/s |
| TTFT | 1974ms | 69211ms |
| Latency | 51104ms | 69211ms |
| Composite Indices | ||
| Value Score | 100.0 | 5.7 |
| Reasoning Score | 54.2 | 64.2 |
| Intelligence | 42.2 | 54.8 |
| Coding | 45.5 | 59.1 |
| Standard Benchmarks | ||
| GPQA | 86.6% | 93.5% |
| HLE | 33.8% | 44.3% |
| SciCode | 50.2% | 56.1% |
| LCR | 73.3% | 74.3% |
| IFBench | 79.9% | 75.9% |
| TAU-bench v2 | 94.2% | 93.9% |
| TerminalBench Hard | 43.2% | 60.6% |
Key Takeaways
MiMo-V2.5-Pro offers the best value at $0.43/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5.5 (xhigh) has the strongest reasoning profile with a 64.2 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
MiMo-V2.5-Pro
- Cost-sensitive applications
- High-volume processing
GPT-5.5 (xhigh)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
