Key Takeaways
GPT-5 Nano wins:
- Cheaper input tokens
- Larger context window
- Better at math
- Supports vision
- Supports tool calls
MiMo-V2-Flash wins:
- Cheaper output tokens
- Faster response time
- Higher intelligence benchmark
- Better at coding
Price Advantage
GPT-5 Nano
Benchmark Advantage
MiMo-V2-Flash
Context Window
GPT-5 Nano
Speed
MiMo-V2-Flash
Pricing Comparison
Price Comparison
| Metric | GPT-5 Nano | MiMo-V2-Flash | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.05 | $0.09 | GPT-5 Nano |
| Output (per 1M tokens) | $0.40 | $0.29 | MiMo-V2-Flash |
| Cache Read (per 1M) | $5000.00 | $45000.00 | GPT-5 Nano |
Using a 3:1 input/output ratio, GPT-5 Nano is 2% cheaper overall.
GPT-5 Nano Providers
OpenAI $0.05 (Cheapest)
Azure $0.05 (Cheapest)
MiMo-V2-Flash Providers
Chutes $0.09 (Cheapest)
AtlasCloud $0.10
Xiaomi $0.10
Novita $0.10
Benchmark Comparison
6
Benchmarks Compared
4
GPT-5 Nano Wins
2
MiMo-V2-Flash Wins
Benchmark Scores
| Benchmark | GPT-5 Nano | MiMo-V2-Flash | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 26.7 | 30.6 | |
Coding Index Code generation & understanding | 20.3 | 25.8 | |
Math Index Mathematical reasoning | 83.7 | 67.7 | |
MMLU Pro Academic knowledge | 78.0 | 74.4 | |
GPQA Graduate-level science | 67.6 | 65.6 | |
LiveCodeBench Competitive programming | 78.9 | 40.2 |
MiMo-V2-Flash significantly outperforms in coding benchmarks.
Cost vs Quality
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GPT-5 Nano
Other models
Context & Performance
Context Window
GPT-5 Nano
400,000
tokens
Max output: 128,000 tokens
MiMo-V2-Flash
262,144
tokens
GPT-5 Nano has a 34% larger context window.
Speed Performance
| Metric | GPT-5 Nano | MiMo-V2-Flash | Winner |
|---|---|---|---|
| Tokens/second | 141.5 tok/s | 142.6 tok/s | - |
| Time to First Token | 110.10s | 1.25s |
Capabilities
Feature Comparison
| Feature | GPT-5 Nano | MiMo-V2-Flash |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | GPT-5 Nano | MiMo-V2-Flash |
|---|---|---|
| License | Proprietary | Open Source |
| Author | OpenAI | Xiaomi |
| Released | Aug 2025 | Dec 2025 |
GPT-5 Nano Modalities
Input
textimagefile
Output
text
MiMo-V2-Flash Modalities
Input
text
Output
text