Claude Fable 5.1 vs Mistral Large 3

Anthropic's Claude Fable 5.1 and Mistral AI's Mistral Large 3 compared on specs, pricing, and capabilities — as configured in AI Crucible ensembles.

Mistral Large 3 input tokens are 20.0x cheaper than Claude Fable 5.1 ($0.60 vs $12.00 per 1M tokens).
Mistral Large 3 output tokens are 33.3x cheaper than Claude Fable 5.1 ($1.80 vs $60.00 per 1M tokens).
Claude Fable 5.1 offers the larger context window: 1M tokens vs 256K tokens for Mistral Large 3.
Claude Fable 5.1 is a reasoning model that spends extra tokens thinking before answering; Mistral Large 3 responds directly.

Specification	Claude Fable 5.1	Mistral Large 3
Provider	Anthropic	Mistral AI
API model ID	claude-fable-5-1	mistral-large-latest
Description	Anthropic's most capable model, for demanding reasoning and long-horizon agentic work, with 1M context and always-on adaptive thinking.	Mistral AI's flagship model with 41B active parameters, excelling at complex reasoning and multimodal tasks.
Context window	1M tokens	256K tokens
Max output tokens	32,768	8,192
Input cost ($/1M tokens)	$12.00	$0.60
Output cost ($/1M tokens)	$60.00	$1.80
Cache read cost ($/1M tokens)	$0.30	-
Latency	high	medium
Reasoning model	Yes	No
Vision (image input)	Yes	Yes
Tool use	Yes	Yes