Key Takeaways
MiniMax M2.1 wins:
- Higher intelligence benchmark
- Better at coding
- Better at math
- Has reasoning mode
Grok 4 Fast wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
- Faster response time
- Supports vision
Price Advantage
Grok 4 Fast
Benchmark Advantage
MiniMax M2.1
Context Window
Grok 4 Fast
Speed
Grok 4 Fast
Pricing Comparison
Price Comparison
| Metric | MiniMax M2.1 | Grok 4 Fast | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.27 | $0.20 | Grok 4 Fast |
| Output (per 1M tokens) | $0.95 | $0.50 | Grok 4 Fast |
| Cache Read (per 1M) | $30000.00 | $50000.00 | MiniMax M2.1 |
Using a 3:1 input/output ratio, Grok 4 Fast is 37% cheaper overall.
MiniMax M2.1 Providers
Chutes $0.27 (Cheapest)
DeepInfra $0.27 (Cheapest)
AtlasCloud $0.29
SiliconFlow $0.29
Minimax $0.30
Grok 4 Fast Providers
xAI $0.20 (Cheapest)
Benchmark Comparison
6
Benchmarks Compared
6
MiniMax M2.1 Wins
0
Grok 4 Fast Wins
Benchmark Scores
| Benchmark | MiniMax M2.1 | Grok 4 Fast | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 39.5 | 22.6 | |
Coding Index Code generation & understanding | 32.8 | 19.0 | |
Math Index Mathematical reasoning | 82.7 | 41.3 | |
MMLU Pro Academic knowledge | 87.5 | 73.0 | |
GPQA Graduate-level science | 83.0 | 60.6 | |
LiveCodeBench Competitive programming | 81.0 | 40.1 |
MiniMax M2.1 significantly outperforms in coding benchmarks.
Cost vs Quality
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MiniMax M2.1
Other models
Context & Performance
Context Window
MiniMax M2.1
196,608
tokens
Grok 4 Fast
2,000,000
tokens
Max output: 30,000 tokens
Grok 4 Fast has a 90% larger context window.
Speed Performance
| Metric | MiniMax M2.1 | Grok 4 Fast | Winner |
|---|---|---|---|
| Tokens/second | 49.7 tok/s | 172.3 tok/s | |
| Time to First Token | 1.96s | 0.60s |
Grok 4 Fast responds 247% faster on average.
Capabilities
Feature Comparison
| Feature | MiniMax M2.1 | Grok 4 Fast |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | MiniMax M2.1 | Grok 4 Fast |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Minimax | Xai |
| Released | Dec 2025 | Sep 2025 |
MiniMax M2.1 Modalities
Input
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Output
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Grok 4 Fast Modalities
Input
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Output
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