Key Takeaways
GPT-5.3 Codex wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Supports vision
- Has reasoning mode
- Supports tool calls
MiMo v2 Pro wins:
- Cheaper input tokens
- Cheaper output tokens
Price Advantage
MiMo v2 Pro
Benchmark Advantage
GPT-5.3 Codex
Context Window
GPT-5.3 Codex
Speed
GPT-5.3 Codex
Pricing Comparison
Price Comparison
| Metric | GPT-5.3 Codex | MiMo v2 Pro | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $1.75 | $1.00 | MiMo v2 Pro |
| Output (per 1M tokens) | $14.00 | $3.00 | MiMo v2 Pro |
| Cache Read (per 1M) | $0.17 | $0.20 | GPT-5.3 Codex |
Using a 3:1 input/output ratio, MiMo v2 Pro is 69% cheaper overall.
GPT-5.3 Codex Providers
No provider data available
MiMo v2 Pro Providers
No provider data available
Benchmark Comparison
3
Benchmarks Compared
3
GPT-5.3 Codex Wins
0
MiMo v2 Pro Wins
Benchmark Scores
| Benchmark | GPT-5.3 Codex | MiMo v2 Pro | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 54.0 | 49.2 | |
Coding Index Code generation & understanding | 53.1 | 41.4 | |
GPQA Graduate-level science | 91.5 | 87.0 |
GPT-5.3 Codex significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Other models
Context & Performance
Context Window
GPT-5.3 Codex
400,000
tokens
MiMo v2 Pro
N/A
tokens
Speed Performance
| Metric | GPT-5.3 Codex | MiMo v2 Pro | Winner |
|---|---|---|---|
| Tokens/second | 74.0 tok/s | 0.0 tok/s | |
| Time to First Token | 85.27s | 0.00s |
GPT-5.3 Codex responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | GPT-5.3 Codex | MiMo v2 Pro |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | GPT-5.3 Codex | MiMo v2 Pro |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | OpenAI | Xiaomi |
| Released | Feb 2026 | Unknown |
GPT-5.3 Codex Modalities
Input
textimage
Output
text
MiMo v2 Pro Modalities
Input
Output