Model Comparison
MiMo-V2-Pro
vs. GPT-5.3 Codex (xhigh)
Comparing 2 AI models · 7 benchmarks · Xiaomi, OpenAI
Recommended Pick
Op GPT-5.3 Codex (xhigh) 11 metric wins Strongest on: Throughput, Latency, Reasoning
Best Value
MiMo-V2-Pro
100.0 value score
54.8 reasoning / $1.50/1M
Lowest Price
MiMo-V2-Pro
$1.00/1M input price
Best Reasoning
GPT-5.3 Codex (xhigh)
61.7 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-Pro has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
MiMo-V2-Pro is 1.8x cheaper on input tokens than GPT-5.3 Codex (xhigh).
Speed gap
GPT-5.3 Codex (xhigh) generates about 2.1x as many tokens per second as MiMo-V2-Pro.
Reasoning gap
GPT-5.3 Codex (xhigh) leads MiMo-V2-Pro by 6.8 points on reasoning.
Coding gap
GPT-5.3 Codex (xhigh) leads MiMo-V2-Pro by 11.7 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-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-5.3 Codex (xhigh)
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Full Comparison
| Metric | Xi MiMo-V2-Pro | Top Pick Op GPT-5.3 Codex (xhigh) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.00/1M | $1.75/1M |
| Output Cost | $3.00/1M | $14.00/1M |
| Blended (3:1) | $1.50/1M | $4.81/1M |
| Specifications | ||
| Organization | Xiaomi | OpenAI |
| Release Date | Mar 18, 2026 | Feb 5, 2026 |
| Performance & Speed | ||
| Throughput | 45.7 tok/s | 97.6 tok/s |
| TTFT | 2323ms | 59032ms |
| Latency | 66280ms | 59032ms |
| Composite Indices | ||
| Value Score | 100.0 | 35.1 |
| Reasoning Score | 54.8 | 61.7 |
| Intelligence | 49.2 | 53.6 |
| Coding | 41.4 | 53.1 |
| Standard Benchmarks | ||
| GPQA | 87.0% | 91.5% |
| HLE | 28.3% | 39.9% |
| SciCode | 42.5% | 53.2% |
| LCR | 60.7% | 74.0% |
| IFBench | 68.8% | 75.4% |
| TAU-bench v2 | 95.0% | 86.0% |
| TerminalBench Hard | 40.9% | 53.0% |
Key Takeaways
MiMo-V2-Pro offers the best value at $1.00/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5.3 Codex (xhigh) has the strongest reasoning profile with a 61.7 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
MiMo-V2-Pro
- Cost-sensitive applications
- High-volume processing
GPT-5.3 Codex (xhigh)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
