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Claude Fable 5.1 (High, Default Fallback)

Benchmark scores, pricing, speed and comparisons for Claude Fable 5.1 (High, Default Fallback).

Key scores

Intelligence51.2Index score
Coding79.1Index score
Speed66.2Tokens/sec

Claude Fable 5.1 is an AI model developed by Anthropic, released on September 1, 2026. Designed with adaptive reasoning and high-effort processing capabilities, the model serves as a default fallback option. In terms of performance metrics, Claude Fable 5.1 achieves an intelligence index of 62.5 and a coding index of 79.1. Benchmark results for the model include a GPQA score of 0.906, an HLE score of 0.559, a SciCode score of 0.576, and an LCR score of 0.77. The model operates at an output speed of 61.39 tokens per second with a time to first token of 16.069 seconds. Pricing is set at $10.00 per million input tokens and $50.00 per million output tokens.

No benchmark data available for this model.

Comparisons with Claude Fable 5.1 (High, Default Fallback)

Generated Franklin AI comparison pages for this model.

Model ComparisonClaude Fable 5.1: High Effort vs. Adaptive ReasoningThis comparison evaluates the performance and operational trade-offs between Claude Fable 5.1’s High Effort and Adaptive Reasoning configurations. While both models share identical pricing and release dates, they divergeModel ComparisonClaude Fable 5.1 vs. Claude Opus 5: Evaluating Anthropic’s Latest IterationsThis comparison examines the performance, cost, and architectural trade-offs between Anthropic’s Claude Fable 5.1 and Claude Opus 5. While both models share an identical intelligence index, they serve distinct operationaModel ComparisonClaude Fable 5.1 vs. Grok 4.6: Comparative AnalysisThis analysis evaluates the performance, cost, and architectural differences between Anthropic’s Claude Fable 5.1 and SpaceXAI’s Grok 4.6. By examining benchmark data and operational metrics, we provide a clear frameworkModel ComparisonClaude Opus 5.5 vs. Claude Fable 5.1: A Comparative AnalysisAnthropic’s latest models, Opus 5.5 and Fable 5.1, offer distinct trade-offs in reasoning, speed, and cost. While they share an identical intelligence index, their performance profiles cater to different operational need