Key Takeaways
Kimi K2 0905 (exacto) wins:
- Cheaper output tokens
GPT-5 Mini wins:
- Cheaper input tokens
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
- Supports vision
Price Advantage
Kimi K2 0905 (exacto)
Benchmark Advantage
GPT-5 Mini
Context Window
GPT-5 Mini
Speed
GPT-5 Mini
Pricing Comparison
Price Comparison
| Metric | Kimi K2 0905 (exacto) | GPT-5 Mini | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.39 | $0.25 | GPT-5 Mini |
| Output (per 1M tokens) | $1.90 | $2.00 | Kimi K2 0905 (exacto) |
| Cache Read (per 1M) | N/A | $25000.00 | GPT-5 Mini |
Using a 3:1 input/output ratio, GPT-5 Mini is 10% cheaper overall.
Kimi K2 0905 (exacto) Providers
Chutes $0.39 (Cheapest)
SiliconFlow $0.40
DeepInfra $0.40
Parasail $0.59
AtlasCloud $0.60
GPT-5 Mini Providers
OpenAI $0.25 (Cheapest)
Azure $0.25 (Cheapest)
Benchmark Comparison
6
Benchmarks Compared
0
Kimi K2 0905 (exacto) Wins
6
GPT-5 Mini Wins
Benchmark Scores
| Benchmark | Kimi K2 0905 (exacto) | GPT-5 Mini | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 30.8 | 41.0 | |
Coding Index Code generation & understanding | 25.9 | 35.3 | |
Math Index Mathematical reasoning | 57.3 | 90.7 | |
MMLU Pro Academic knowledge | 81.9 | 83.7 | |
GPQA Graduate-level science | 76.7 | 82.8 | |
LiveCodeBench Competitive programming | 61.0 | 83.8 |
GPT-5 Mini significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
Loading chart...
Kimi K2 0905 (exacto)
Other models
Context & Performance
Context Window
Kimi K2 0905 (exacto)
262,144
tokens
Max output: 262,144 tokens
GPT-5 Mini
400,000
tokens
Max output: 128,000 tokens
GPT-5 Mini has a 34% larger context window.
Speed Performance
| Metric | Kimi K2 0905 (exacto) | GPT-5 Mini | Winner |
|---|---|---|---|
| Tokens/second | 51.7 tok/s | 78.9 tok/s | |
| Time to First Token | 0.54s | 107.34s |
GPT-5 Mini responds 53% faster on average.
Capabilities
Feature Comparison
| Feature | Kimi K2 0905 (exacto) | GPT-5 Mini |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Kimi K2 0905 (exacto) | GPT-5 Mini |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Moonshotai | OpenAI |
| Released | Sep 2025 | Aug 2025 |
Kimi K2 0905 (exacto) Modalities
Input
text
Output
text
GPT-5 Mini Modalities
Input
textimagefile
Output
text