Model Comparison
GPT-5.3 Codex (xhigh)
vs. MiMo-V2.5-Pro
Comparing 2 AI models · 7 benchmarks · OpenAI, Xiaomi
Recommended Pick
Op GPT-5.3 Codex (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-5.3 Codex (xhigh)
58.6 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-5.3 Codex (xhigh)
53.1 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 4.0x cheaper on input tokens than GPT-5.3 Codex (xhigh).
Speed gap
GPT-5.3 Codex (xhigh) generates about 1.9x as many tokens per second as MiMo-V2.5-Pro.
Reasoning gap
GPT-5.3 Codex (xhigh) leads MiMo-V2.5-Pro by 4.4 points on reasoning.
Coding gap
GPT-5.3 Codex (xhigh) leads MiMo-V2.5-Pro by 7.6 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-5.3 Codex (xhigh)
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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MiMo-V2.5-Pro
Xiaomi
TTFT
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Time
—
tok/s
—
Tokens
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Cost
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Which answer was more useful?
Full Comparison
| Metric | Top Pick Op GPT-5.3 Codex (xhigh) | Xi MiMo-V2.5-Pro |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.75/1M | $0.43/1M |
| Output Cost | $14.00/1M | $0.87/1M |
| Blended (3:1) | $4.81/1M | $0.54/1M |
| Specifications | ||
| Organization | OpenAI | Xiaomi |
| Release Date | Feb 5, 2026 | Apr 22, 2026 |
| Performance & Speed | ||
| Throughput | 88.2 tok/s | 47.5 tok/s |
| TTFT | 83405ms | 1832ms |
| Latency | 83405ms | 43974ms |
| Composite Indices | ||
| Value Score | 12.2 | 100.0 |
| Reasoning Score | 58.6 | 54.2 |
| Intelligence | 44.3 | 42.2 |
| Coding | 53.1 | 45.5 |
| Standard Benchmarks | ||
| GPQA | 91.5% | 86.6% |
| HLE | 39.9% | 33.8% |
| SciCode | 53.2% | 50.2% |
| LCR | 74.0% | 73.3% |
| IFBench | 75.4% | 79.9% |
| TAU-bench v2 | 86.0% | 94.2% |
| TerminalBench Hard | 53.0% | 43.2% |
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-5.3 Codex (xhigh) has the strongest reasoning profile with a 58.6 reasoning score, combining the available reasoning-heavy benchmarks.
GPT-5.3 Codex (xhigh) reaches a 53.1 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
GPT-5.3 Codex (xhigh)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
MiMo-V2.5-Pro
- Cost-sensitive applications
- High-volume processing
