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
Claude Opus 5.5 vs LongCat 2.0: benchmark scores, pricing & comparison.
Side-by-side Claude Opus 5.5 vs LongCat 2.0 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.
Rank #12 vs #38AskClash overall scores 64.5 vs 53.1.
Pricing $4.00/$20.0 vs $0.75/$2.95Input and output token prices per 1M tokens when published.
Proprietary vs Open WeightAnthropic vs Meituan.
Claude Opus 5.5 vs LongCat 2.0 benchmark comparison
Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.
| Metric | Claude Opus 5.5 | LongCat 2.0 |
|---|---|---|
| Overall Score | 64.5 | 53.1 |
| Leaderboard Rank | #12 | #38 |
| ACB | 61.7 | — |
| HLE | 67.7 | 33.7 |
| GPQA | — | 88.9 |
| IFEval | — | 90.0 |
| SWE-Pro | 89.9 | 59.5 |
| Terminal-Bench | — | 70.8 |
| DeepSWE | 74.2 | — |
| GDPval-AA | 1846.2 | 856.2 |
| MMMU-Pro | 87.7 | — |
| Tau2 | — | 88.2 |
| Input Price (per 1M tokens) | $4.00 | $0.75 |
| Output Price (per 1M tokens) | $20.0 | $2.95 |
| Context Window | 1M | 1M |
| Benchmarks Published | 7 | 8 |
Claude Opus 5.5 vs LongCat 2.0 head-to-head charts
Claude Opus 5.5 leads 4 and LongCat 2.0 leads 0 of 4 shared benchmarks. LongCat 2.0 is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.
Claude Opus 5.5LongCat 2.0
Overall
HLE
SWE-Pro
GDPval-AA
Claude Opus 5.5
Input$4.00
Output$20.0
Workload$8.00
Context1M
LongCat 2.0
Input$0.75
Output$2.95
Workload$1.34
Context1M
Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.
More Claude Opus 5.5 and LongCat 2.0 comparisons
Explore how Claude Opus 5.5 and LongCat 2.0 stack up against other top-ranked LLMs.
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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.