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Claude Fable 5.1 (Medium, Default Fallback)

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

Key scores

Intelligence48.9Index score
Coding77.1Index score
Speed69.1Tokens/sec

Claude Fable 5.1 is an artificial intelligence model developed by Anthropic and released on September 1, 2026. Designed for adaptive reasoning with medium effort and a default fallback configuration, the model achieves an intelligence index of 60.5 and a coding index of 77.1. Performance metrics indicate an output speed of 46.581 tokens per second with a time to first token of 4.523 seconds. Benchmark results for the model include 0.886 on GPQA, 0.538 on HLE, 0.553 on SciCode, and 0.786666666666667 on LCR. Pricing for Claude Fable 5.1 is set at $10.00 per million input tokens and $50.00 per million output tokens, resulting in a blended rate of $20.00 per million tokens.

No benchmark data available for this model.

Comparisons with Claude Fable 5.1 (Medium, Default Fallback)

Generated Franklin AI comparison pages for this model.

Model ComparisonClaude Fable 5.1: Adaptive Reasoning Trade-offsAnthropic’s Claude Fable 5.1 offers two distinct operational modes: Medium Effort and Max Effort. While both share identical pricing, they diverge significantly in reasoning capability, output velocity, and latency, forcModel ComparisonClaude Fable 5.1 vs. Grok 4.6: Comparative AnalysisThis analysis evaluates Anthropic’s Claude Fable 5.1 and SpaceXAI’s Grok 4.6, comparing their reasoning capabilities, operational costs, and performance metrics to help users determine the optimal model for their specifiModel ComparisonGPT-6 Astra vs. Claude Fable 5.1: A Comparative AnalysisReleased within days of each other in September 2026, OpenAI’s GPT-6 Astra and Anthropic’s Claude Fable 5.1 represent the current frontier of AI capability. While both models share identical pricing and coding performancModel ComparisonGPT-6.1 Sol (medium) vs Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback)GPT-6.1 Sol (medium) and Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback) are compared across intelligence, coding, math, speed, pricing, and benchmark coverage.Model ComparisonGPT-6.1 Sol (low) vs Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback)GPT-6.1 Sol (low) and Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback) are compared across intelligence, coding, math, speed, pricing, and benchmark coverage.Model ComparisonJT-4.1 Flash 236B A21B vs Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback)JT-4.1 Flash 236B A21B and Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback) are compared across intelligence, coding, math, speed, pricing, and benchmark coverage.