Claude Opus 4.5 vs Claude Opus 4.6
Claude Opus 4.6 leads in 3 of 8 categories
Arena ELO
Claude Opus 4.6
Cheaper
Tie
Faster
Claude Opus 4.6
Detailed Comparison
| Category | Claude Opus 4.5 | Claude Opus 4.6 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Context Window | 200K | 1M WIN |
| Input Price ($/1M) | $5 | $5 |
| Output Price ($/1M) | $25 | $25 |
| Arena ELO | 1380 | 1549 WIN |
| Coding | 80.9% SWE-bench | 80.8% SWE-bench |
| Reasoning | unknown | 65.4% Terminal-Bench |
| Speed (tokens/sec) | ~35 t/s | ~40 t/s WIN |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, Claude Opus 4.5 or Claude Opus 4.6?
Claude Opus 4.6 is approximately 0% cheaper than Claude Opus 4.5 per million tokens.
Which is better for coding, Claude Opus 4.5 or Claude Opus 4.6?
Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while Claude Opus 4.6 scores 80.8% SWE-bench.
Which has a larger context window?
Claude Opus 4.5 supports 200K context, while Claude Opus 4.6 supports 1M.
Is Claude Opus 4.5 or Claude Opus 4.6 open source?
Claude Opus 4.5 is proprietary. Claude Opus 4.6 is proprietary.
Which ranks higher on the Chatbot Arena leaderboard?
Claude Opus 4.6 ranks higher with ELO 1549 vs 1380.
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