Key Takeaways
Claude 3.5 Sonnet wins:
- Cheaper input tokens
- Cheaper output tokens
Claude Opus 4.6 wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Has reasoning mode
Price Advantage
Claude 3.5 Sonnet
Benchmark Advantage
Claude Opus 4.6
Context Window
Claude Opus 4.6
Speed
Claude Opus 4.6
Pricing Comparison
Price Comparison
| Metric | Claude 3.5 Sonnet | Claude Opus 4.6 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $3.00 | $5.00 | Claude 3.5 Sonnet |
| Output (per 1M tokens) | $15.00 | $25.00 | Claude 3.5 Sonnet |
| Cache Read (per 1M) | $0.60 | $0.50 | Claude Opus 4.6 |
| Cache Write (per 1M) | $7.50 | $6.25 | Claude Opus 4.6 |
Using a 3:1 input/output ratio, Claude 3.5 Sonnet is 40% cheaper overall.
Claude 3.5 Sonnet Providers
No provider data available
Claude Opus 4.6 Providers
No provider data available
Benchmark Comparison
7
Benchmarks Compared
0
Claude 3.5 Sonnet Wins
3
Claude Opus 4.6 Wins
Benchmark Scores
| Benchmark | Claude 3.5 Sonnet | Claude Opus 4.6 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 15.9 | 46.5 | |
Coding Index Code generation & understanding | 30.2 | 47.6 | |
MMLU Pro Academic knowledge | 77.2 | - | - |
GPQA Graduate-level science | 59.9 | 84.0 | |
LiveCodeBench Competitive programming | 38.1 | - | - |
Aider Real-world code editing | 84.2 | - | - |
AIME Competition math | 15.7 | - | - |
Claude Opus 4.6 significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Claude 3.5 Sonnet
Other models
Context & Performance
Context Window
Claude 3.5 Sonnet
200,000
tokens
Claude Opus 4.6
1,000,000
tokens
Claude Opus 4.6 has a 80% larger context window.
Speed Performance
| Metric | Claude 3.5 Sonnet | Claude Opus 4.6 | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 55.9 tok/s | |
| Time to First Token | 0.00s | 1.76s |
Claude Opus 4.6 responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | Claude 3.5 Sonnet | Claude Opus 4.6 |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Claude 3.5 Sonnet | Claude Opus 4.6 |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Anthropic | Anthropic |
| Released | Oct 2024 | Feb 2026 |
Claude 3.5 Sonnet Modalities
Input
textimagefile
Output
text
Claude Opus 4.6 Modalities
Input
textimage
Output
text