Key Takeaways
Claude Sonnet 4.6 wins:
- Has reasoning mode
GPT-5.4 wins:
- Cheaper input tokens
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
Price Advantage
GPT-5.4
Benchmark Advantage
GPT-5.4
Context Window
GPT-5.4
Speed
GPT-5.4
Pricing Comparison
Price Comparison
| Metric | Claude Sonnet 4.6 | GPT-5.4 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $3.00 | $2.50 | GPT-5.4 |
| Output (per 1M tokens) | $15.00 | $15.00 | Tie |
| Cache Read (per 1M) | $0.30 | $0.25 | GPT-5.4 |
| Cache Write (per 1M) | $3.75 | N/A | Claude Sonnet 4.6 |
Using a 3:1 input/output ratio, GPT-5.4 is 6% cheaper overall.
Claude Sonnet 4.6 Providers
No provider data available
GPT-5.4 Providers
No provider data available
Benchmark Comparison
3
Benchmarks Compared
0
Claude Sonnet 4.6 Wins
3
GPT-5.4 Wins
Benchmark Scores
| Benchmark | Claude Sonnet 4.6 | GPT-5.4 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 42.6 | 57.0 | |
Coding Index Code generation & understanding | 43.0 | 57.3 | |
GPQA Graduate-level science | 79.7 | 92.0 |
GPT-5.4 significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Other models
Context & Performance
Context Window
Claude Sonnet 4.6
1,000,000
tokens
GPT-5.4
1,050,000
tokens
GPT-5.4 has a 5% larger context window.
Speed Performance
| Metric | Claude Sonnet 4.6 | GPT-5.4 | Winner |
|---|---|---|---|
| Tokens/second | 53.4 tok/s | 76.9 tok/s | |
| Time to First Token | 0.87s | 179.87s |
GPT-5.4 responds 44% faster on average.
Capabilities
Feature Comparison
| Feature | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Anthropic | OpenAI |
| Released | Feb 2026 | Mar 2026 |
Claude Sonnet 4.6 Modalities
Input
textimage
Output
text
GPT-5.4 Modalities
Input
textimagefile
Output
text