Benchmark scores
Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.
LLM Comparison
Kimi K3.1 Pro vs Claude Opus 4.8: benchmark scores, pricing & comparison.
Side-by-side Kimi K3.1 Pro vs Claude Opus 4.8 comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.
Verdict: Kimi K3.1 Pro ranks higher (#4 vs #43) and wins 5 of 7 shared benchmarks; Kimi K3.1 Pro costs less ($2.00/$10.0 vs $5.00/$25.0 per 1M tokens).
Rank #4 vs #43AskClash overall scores 75.5 vs 59.5.
Pricing $2.00/$10.0 vs $5.00/$25.0Input and output token prices per 1M tokens when published.
Open Weight vs ProprietaryMoonshot AI vs Anthropic.
Kimi K3.1 Pro vs Claude Opus 4.8 benchmark comparison
Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.
| Metric | Kimi K3.1 Pro | Claude Opus 4.8 |
|---|---|---|
| Overall Score | 75.5 | 59.5 |
| Leaderboard Rank | #4 | #43 |
| ACB | — | 60.1 |
| RWT | — | 9.0 |
| Coding Agent Index | — | 72.5 |
| HLE | 70.0 | 57.9 |
| GPQA | 94.2 | 93.6 |
| IFEval | — | 62.2 |
| SWE-bench | — | 88.6 |
| SWE-Pro | — | 69.2 |
| SWE-Atlas | — | 82.5 |
| Terminal-Bench | 65.7 | 21.7 |
| DeepSWE | 75.5 | 59.0 |
| GDPval-AA | 1846.0 | 1889.8 |
| OSWorld | — | 83.4 |
| MCP Atlas | — | 82.2 |
| Finance Agent | 58.6 | 53.9 |
| CharXiv | 89.0 | 89.9 |
| MMMU-Pro | 84.1 | — |
| ARC-AGI 2 | — | 72.1 |
| Tau2 | — | 94.4 |
| Input Price (per 1M tokens) | $2.00 | $5.00 |
| Output Price (per 1M tokens) | $10.0 | $25.0 |
| Context Window | 1M | 1M |
| Benchmarks Published | 9 | 16 |
Kimi K3.1 Pro vs Claude Opus 4.8 head-to-head charts
Kimi K3.1 Pro leads 6 and Claude Opus 4.8 leads 2 of 8 shared benchmarks. Kimi K3.1 Pro is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.
Kimi K3.1 ProClaude Opus 4.8
Overall
HLE
GPQA
Terminal-Bench
DeepSWE
GDPval-AA
Finance Agent
CharXiv
Kimi K3.1 Pro
Input$2.00
Output$10.0
Workload$4.00
Context1M
Claude Opus 4.8
Input$5.00
Output$25.0
Workload$10
Context1M
Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.
More Kimi K3.1 Pro and Claude Opus 4.8 comparisons
Explore how Kimi K3.1 Pro and Claude Opus 4.8 stack up against other top-ranked LLMs.
Claude Opus 5.5 vs Kimi K3.1 ProClaude Opus 5.5 vs Claude Opus 4.8Claude Fable 5.1 vs Kimi K3.1 ProClaude Fable 5.1 vs Claude Opus 4.8Claude Sonnet 5.5 vs Kimi K3.1 ProClaude Sonnet 5.5 vs Claude Opus 4.8Kimi K3.1 Pro vs Claude Opus 5Claude Opus 5 vs Claude Opus 4.8Kimi K3.1 Pro vs Claude Fable 5Claude Fable 5 vs Claude Opus 4.8
How to read this comparison
Token pricing
Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.
Coverage matters
Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.
This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.