Claude Opus 5 vs Claude 4.7 Opus
Head-to-head technical comparison of intelligence, capabilities, and API pricing.
Which should you use?
Claude Opus 5 supersedes Claude 4.7 Opus in Anthropic's line-up, so this is an upgrade question rather than a bake-off.
Both bill at $5 per 1M input tokens, so there is no cost argument for staying.
Their Arena Elo differs by only 1 points, inside the confidence intervals the public board reports, so human preference does not separate them.
Pick Claude Opus 5 when
- Higher composite index — 96.6 against 93.8, a gap of 2.8 points.
- Stronger on MMLU-Pro: 95.7% against 93.8%.
Pick Claude 4.7 Opus when
On these measures Claude 4.7 Opus does not lead Claude Opus 5 anywhere, so pick it only for reasons outside this table — an existing integration, a region, or a contract.
Value per point of measured capability, at list input pricing: Claude Opus 5 $0.052 · Claude 4.7 Opus $0.053 per index point. Run your own token mix through the token cost calculator — a comparison at list price ignores caching and batch discounts, which move real bills more than this gap does.
Where these numbers come from
Figures as of 2026-09-07. Arena Elo and pricing are read from the public board and each vendor's own pricing page; see the full leaderboard for all 34 models and which columns are measured rather than estimated, or the benchmark matrix for scores benchmark by benchmark.