Claude 5.5 SonnetvsClaude Fable 5.1

Claude 5.5 Sonnet leads the overall Podium Score by 6.4 points (94.8 vs 88.4).Category wins: Claude 5.5 Sonnet 3 — 1 Claude Fable 5.1. Claude 5.5 Sonnet is faster (94 t/s vs 85 t/s).

Open in Compare Tool →View Claude 5.5 SonnetView Claude Fable 5.1
Claude 5.5 SonnetDrag slider or hover to compareClaude Fable 5.1
Claude Fable 5.1
88.4
Coding: 95.5 · Speed: 85 t/s
Output Price: $15/M
Claude 5.5 Sonnet
94.8
Coding: 91.5 · Speed: 94 t/s
Output Price: $15/M
Quick VerdictAggregated 2026 Benchmark Analysis

Claude 5.5 Sonnet is rated higher overall with a Podium Score of 94.8 (vs 88.4 for Claude Fable 5.1). In head-to-head domain evaluations, Claude 5.5 Sonnet outperforms in 3 of 7 benchmark categories.

Coding & Engineering
Claude Fable 5.1 (95.5)
Inference Speed
Claude 5.5 Sonnet (94 t/s)
Cost Efficiency
Comparable
API Price / 1M (in · out)
Claude 5.5 Sonnet $3/M · $15/M — Claude Fable 5.1 $3/M · $15/M

Choose Claude 5.5 Sonnet for vision and multimodal apps, and Claude Fable 5.1 for coding and software engineering.

MetricClaude 5.5 SonnetClaude Fable 5.1
Podium Score94.8 ▲88.4
Arena Elo1520—
Intelligence Index95.0—
Coding91.595.5 ▲
Math94.2—
Reasoning95.0 ▲92.0
Agentic89.4—
Knowledge88.0 ▲58.0
Multimodal96.0 ▲62.0
Long-context98.0—
Output speed94 t/s ▲85 t/s
Output price$15/M$15/M
Context window1000K ▲500K
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Claude 5.5 Sonnet vs Claude Mythos · Claude 5.5 Sonnet vs Kimi K3.1 Pro · Claude 5.5 Sonnet vs Eleven Multilingual v3 · Claude 5.5 Sonnet vs FLUX.2 Pro
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