Key Takeaways
Claude Opus 4.5 wins:
- Faster response time
- Better at math
- Has reasoning mode
- Supports tool calls
Claude Opus 4.6 wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
Price Advantage
Claude Opus 4.5
Benchmark Advantage
Claude Opus 4.6
Context Window
Claude Opus 4.6
Speed
Claude Opus 4.5
Pricing Comparison
Price Comparison
| Metric | Claude Opus 4.5 | Claude Opus 4.6 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $5.00 | $5.00 | Tie |
| Output (per 1M tokens) | $25.00 | $25.00 | Tie |
| Cache Read (per 1M) | $500000.00 | $500000.00 | Tie |
| Cache Write (per 1M) | $6250000.00 | $6250000.00 | Tie |
Both models have similar overall pricing.
Claude Opus 4.5 Providers
Amazon Bedrock $5.00 (Cheapest)
Google $5.00 (Cheapest)
Anthropic $5.00 (Cheapest)
Claude Opus 4.6 Providers
Amazon Bedrock $5.00 (Cheapest)
Anthropic $5.00 (Cheapest)
Benchmark Comparison
6
Benchmarks Compared
0
Claude Opus 4.5 Wins
3
Claude Opus 4.6 Wins
Benchmark Scores
| Benchmark | Claude Opus 4.5 | Claude Opus 4.6 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 43.0 | 46.4 | |
Coding Index Code generation & understanding | 42.9 | 47.6 | |
Math Index Mathematical reasoning | 62.7 | - | - |
MMLU Pro Academic knowledge | 88.9 | - | - |
GPQA Graduate-level science | 81.0 | 84.0 | |
LiveCodeBench Competitive programming | 73.8 | - | - |
Claude Opus 4.5 shows stronger mathematical reasoning abilities.
Cost vs Quality
X-axis:
Y-axis:
Loading chart...
Claude Opus 4.5
Other models
Context & Performance
Context Window
Claude Opus 4.5
200,000
tokens
Max output: 64,000 tokens
Claude Opus 4.6
1,000,000
tokens
Max output: 128,000 tokens
Claude Opus 4.6 has a 80% larger context window.
Speed Performance
| Metric | Claude Opus 4.5 | Claude Opus 4.6 | Winner |
|---|---|---|---|
| Tokens/second | 80.4 tok/s | 0.0 tok/s | |
| Time to First Token | 1.63s | 0.00s |
Claude Opus 4.5 responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | Claude Opus 4.5 | 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 Opus 4.5 | Claude Opus 4.6 |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Anthropic | Anthropic |
| Released | Nov 2025 | Feb 2026 |
Claude Opus 4.5 Modalities
Input
fileimagetext
Output
text
Claude Opus 4.6 Modalities
Input
textimage
Output
text