OpenAI: GPT-5.1 Chat

OpenAI

GPT-5.1 Chat (AKA Instant is the fast, lightweight member of the 5.1 family, optimized for low-latency chat while retain

Multimodal vision
TextVision
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Specifications

VendorOpenAI
Familyopenai
Context128K · 96k words（≈ a thesis）
Max output128K · 96k words（≈ a thesis）Below average
Released2026-06-19
Open sourceNo
Tool use—

Pricing across channels

per 1M tokens, USD

ChannelTypeInputOutput→
OpenRouter (auto)Aggregator$1.25$10.00visitAd
OpenRouter API (auto-fetched)· 2026-06-19

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