Alex Getmanearly AI signals
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UpdatedOpenAIgpt-5.1

GPT-5.1 spotted on Arena

Confirmed · 13 evidence linksFirst seen Updated Recorded automatically by Signal Forge

GPT-5.1 is a model from OpenAI, released on 13 Nov 2025. First seen 11 Sep 2026. Catalogues list a 400,000 tokens context window. 13 evidence links.

Facts as of

Context window
400,000
Input · USD / 1M tokens
$1.25
Output · USD / 1M tokens
$10.00
Max output
128,000
Input
text · image
Output
text
Cached input · USD / 1M tokens
$0.125

Alex's take

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Evidence links 13

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