Key Takeaways
GPT-5.4 wins:
- Higher intelligence benchmark
- Better at coding
Grok 4.1 Fast wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
- Faster response time
- Better at math
- Has reasoning mode
Price Advantage
Grok 4.1 Fast
Benchmark Advantage
GPT-5.4
Context Window
Grok 4.1 Fast
Speed
Grok 4.1 Fast
Pricing Comparison
Benchmark Comparison
Context & Performance
Capabilities
Feature Comparison
| Feature | GPT-5.4 | Grok 4.1 Fast |
|---|---|---|
Vision (Image Input) | ||
Tool/Function Calls | ||
Reasoning Mode | ||
Audio Input | ||
Audio Output | ||
PDF Input | ||
Prompt Caching | ||
Web Search |
License & Release
| Property | GPT-5.4 | Grok 4.1 Fast |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | OpenAI | Xai |
| Released | Mar 2026 | Nov 2025 |
GPT-5.4 Modalities
Input
textimagefile
Output
text
Grok 4.1 Fast Modalities
Input
textimage
Output
text