GPT-5.5 vs Mistral Large 3

OpenAI's GPT-5.5 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 10.0x cheaper than GPT-5.5 ($0.60 vs $6.00 per 1M tokens).
Mistral Large 3 output tokens are 20.0x cheaper than GPT-5.5 ($1.80 vs $36.00 per 1M tokens).
GPT-5.5 offers the larger context window: 1.05M tokens vs 256K tokens for Mistral Large 3.
GPT-5.5 is a reasoning model that spends extra tokens thinking before answering; Mistral Large 3 responds directly.

Specification	GPT-5.5	Mistral Large 3
Provider	OpenAI	Mistral AI
API model ID	gpt-5.5	mistral-large-latest
Description	OpenAI's flagship model with adaptive reasoning, 1M context, and native multimodal intelligence.	Mistral AI's flagship model with 41B active parameters, excelling at complex reasoning and multimodal tasks.
Context window	1.05M tokens	256K tokens
Max output tokens	128,000	8,192
Input cost ($/1M tokens)	$6.00	$0.60
Output cost ($/1M tokens)	$36.00	$1.80
Cache read cost ($/1M tokens)	$0.60	-
Latency	medium	medium
Reasoning model	Yes	No
Vision (image input)	Yes	Yes
Tool use	Yes	Yes