AI model matchup

GPT-Rosalind-6 vs Claude Fable 5.1

A side-by-side look at published capability scores, listed API pricing, speed, context, and license - to help you decide which trade-offs fit your work.

OpenAI

GPT-5.6 Sol

Rank #1 • Score 57.2
Comparison Metrics
Speed: 89c/s vs 68c/s
Pricing: $7.78 vs $7.22
Anthropic

Claude Opus 5

Rank #2 • Score 56.2

GPT-Rosalind-6vsClaude Fable 5.1

Claude Fable 5.1 leads the RankLLMs Index by 0.3 points (63.8 vs 63.5). Verified API Pricing: .00 (GPT-Rosalind-6) vs $10.00 (Claude Fable 5.1) per 1M tokens.

Capability profile

GPT-Rosalind-6Claude Fable 5.1

Speed duel

tps
GPT-Rosalind-672
Claude Fable 5.168

Price duel

$/1M
GPT-Rosalind-6.00
Claude Fable 5.1$10.00

Shorter bar = cheaper. Blended per 1M tokens.

MetricGPT-Rosalind-6Claude Fable 5.1
RankLLMs Overall Score63.5 pts 63.8 pts ▲
Reasoning95.0 ▲89.5
Coding84.0 ▲81.2
Agentic Tool Use87.5 ▲82.0
Code Arena Elo1980 2045 ▲
Inference Speed72 tps ▲68 tps
API Price (per 1M tokens).00 ▲$10.00
Context Window1M 1M
LicenseProprietary Proprietary
Global Rank#8 #7 ▲

Decision notes

What the numbers suggest

Claude Fable 5.1 leads the RankLLMs overall score by 0.3 points. Claude Fable 5.1 has the lower listed API rate ($10.00 per 1M tokens).

Treat the overall index as a starting point, then prioritize the benchmark that resembles your task. Published scores and provider pricing can change; this comparison does not represent a first-party test of either model.

Overall index
Claude Fable 5.1 leads
63.5 to 63.8 pts
Coding score
GPT-Rosalind-6 leads
84.0 to 81.2 pts
Reasoning score
GPT-Rosalind-6 leads
95.0 to 89.5 pts
Agentic score
GPT-Rosalind-6 leads
87.5 to 82.0 pts

Choose by workload

Which profile fits your use?

OpenAI

Consider GPT-Rosalind-6 when

your workload gives more weight to the higher listed coding score, the higher listed reasoning score. Compare those signals with your own task mix, latency needs, and budget.

View GPT-Rosalind-6 profile

Anthropic

Consider Claude Fable 5.1 when

your workload gives more weight to the higher overall index score, the lower listed API rate. Compare those signals with your own task mix, latency needs, and budget.

View Claude Fable 5.1 profile

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