Claude Opus 4.8 vs Kimi K2.5
Claude Opus 4.8 (Anthropic) and Kimi K2.5 (Moonshot) compared on benchmarks, pricing, context window, and use-case rankings.
- Claude Opus 4.8 leads on overall intelligence (ECI 157 vs 148).
- Kimi K2.5 is cheaper on input tokens — $0.38 vs $5.00 per 1M.
- Claude Opus 4.8 has a larger context window (1M vs 262K tokens).
- Claude Opus 4.8 ranks higher for coding (96th vs 46th percentile).
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Claude Opus 4.8 better than Kimi K2.5?
On Epoch AI's Capabilities Index, Claude Opus 4.8 scores higher (157) than Kimi K2.5 (148). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is cheaper, Claude Opus 4.8 or Kimi K2.5?
Kimi K2.5 is cheaper on input tokens at $0.38 per million, versus $5.00 (representative OpenRouter pricing).
Which has a larger context window, Claude Opus 4.8 or Kimi K2.5?
Claude Opus 4.8 supports up to 1M tokens, compared with 262K for the other.
Which is better for coding, Claude Opus 4.8 or Kimi K2.5?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Claude Opus 4.8 ranks higher — 96th vs 46th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.