Key Takeaways
MiniMax M2.1 wins:
- Cheaper output tokens
- Higher intelligence benchmark
- Has reasoning mode
GPT-5.1-Codex-Mini wins:
- Cheaper input tokens
- Larger context window
- Faster response time
- Better at coding
- Better at math
- Supports vision
Price Advantage
MiniMax M2.1
Benchmark Advantage
GPT-5.1-Codex-Mini
Context Window
GPT-5.1-Codex-Mini
Speed
GPT-5.1-Codex-Mini
Pricing Comparison
Price Comparison
| Metric | MiniMax M2.1 | GPT-5.1-Codex-Mini | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.27 | $0.25 | GPT-5.1-Codex-Mini |
| Output (per 1M tokens) | $0.95 | $2.00 | MiniMax M2.1 |
| Cache Read (per 1M) | $30000.00 | $25000.00 | GPT-5.1-Codex-Mini |
Using a 3:1 input/output ratio, MiniMax M2.1 is 36% cheaper overall.
MiniMax M2.1 Providers
Chutes $0.27 (Cheapest)
DeepInfra $0.27 (Cheapest)
AtlasCloud $0.29
SiliconFlow $0.29
Minimax $0.30
GPT-5.1-Codex-Mini Providers
OpenAI $0.25 (Cheapest)
Azure $0.25 (Cheapest)
Benchmark Comparison
6
Benchmarks Compared
3
MiniMax M2.1 Wins
3
GPT-5.1-Codex-Mini Wins
Benchmark Scores
| Benchmark | MiniMax M2.1 | GPT-5.1-Codex-Mini | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 39.5 | 38.5 | |
Coding Index Code generation & understanding | 32.8 | 36.4 | |
Math Index Mathematical reasoning | 82.7 | 91.7 | |
MMLU Pro Academic knowledge | 87.5 | 82.0 | |
GPQA Graduate-level science | 83.0 | 81.3 | |
LiveCodeBench Competitive programming | 81.0 | 83.6 |
GPT-5.1-Codex-Mini shows stronger mathematical reasoning abilities.
Cost vs Quality
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MiniMax M2.1
Other models
Context & Performance
Context Window
MiniMax M2.1
196,608
tokens
GPT-5.1-Codex-Mini
400,000
tokens
Max output: 100,000 tokens
GPT-5.1-Codex-Mini has a 51% larger context window.
Speed Performance
| Metric | MiniMax M2.1 | GPT-5.1-Codex-Mini | Winner |
|---|---|---|---|
| Tokens/second | 60.6 tok/s | 114.2 tok/s | |
| Time to First Token | 1.73s | 12.88s |
GPT-5.1-Codex-Mini responds 89% faster on average.
Capabilities
Feature Comparison
| Feature | MiniMax M2.1 | GPT-5.1-Codex-Mini |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | MiniMax M2.1 | GPT-5.1-Codex-Mini |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Minimax | OpenAI |
| Released | Dec 2025 | Nov 2025 |
MiniMax M2.1 Modalities
Input
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Output
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GPT-5.1-Codex-Mini Modalities
Input
imagetext
Output
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