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	GPT-5.1OpenAI
Best input	$0.625 /MTok
Best output	$5.00 /MTok
Cache read	$0.063
Context	400K
Max output	128K
Modalities in	image, text, file
Tool calling	✓
Structured output	✓
Reasoning	✓
Vision	✓
Audio input	—
Prompt caching	✓
Providers	5
Cheapest provider	OpenAI
License	Proprietary
Released	Nov 13, 2025