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 Sonnet 5.5 vs Claude Fable 5.1 (XHigh): benchmark scores, pricing & comparison.
Side-by-side Claude Sonnet 5.5 vs Claude Fable 5.1 (XHigh) 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: Claude Sonnet 5.5 ranks higher (#3 vs #13) and wins 2 of 3 shared benchmarks.
Rank #3 vs #13AskClash overall scores 76.4 vs 69.0.
Pricing $2.00/$10.0 vs —/—Input and output token prices per 1M tokens when published.
Proprietary vs AI modelAnthropic vs Anthropic.
Claude Sonnet 5.5 vs Claude Fable 5.1 (XHigh) benchmark comparison
Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.
| Metric | Claude Sonnet 5.5 | Claude Fable 5.1 (XHigh) |
|---|---|---|
| Overall Score | 76.4 | 69.0 |
| Leaderboard Rank | #3 | #13 |
| ACB | 76.6 | 79.2 |
| RWT | — | 9.0 |
| HLE | 64.5 | 58.7 |
| GPQA | — | 93.4 |
| SWE-Pro | 81.3 | — |
| Terminal-Bench | 63.6 | — |
| DeepSWE | 71.0 | — |
| GDPval-AA | 1844.2 | 1732.1 |
| Finance Agent | 58.1 | — |
| ARC-AGI 2 | — | 90.0 |
| Input Price (per 1M tokens) | $2.00 | — |
| Output Price (per 1M tokens) | $10.0 | — |
| Context Window | 1M | — |
| Benchmarks Published | 10 | 8 |
Claude Sonnet 5.5 vs Claude Fable 5.1 (XHigh) head-to-head charts
Claude Sonnet 5.5 leads 3 and Claude Fable 5.1 (XHigh) leads 1 of 4 shared benchmarks. Charts show only benchmarks both models publish.
Claude Sonnet 5.5Claude Fable 5.1 (XHigh)
Overall
ACB
HLE
GDPval-AA
Claude Sonnet 5.5
Input$2.00
Output$10.0
Workload$4.00
Context1M
Claude Fable 5.1 (XHigh)
Input—
Output—
Workload—
Context—
Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.
More Claude Sonnet 5.5 and Claude Fable 5.1 (XHigh) comparisons
Explore how Claude Sonnet 5.5 and Claude Fable 5.1 (XHigh) 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.