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OpenAI

GPT-5.1-Instant

openai/gpt-5.1-instant · rates as of · Benchmarks · Plans · Calculator

Compact GPT model for low-latency assistance and high-volume workloads

Cheapest input
$1.10
$/MTok · models.dev
Cheapest output
$9
$/MTok
Context
128K
tokens
Offers
2
1 source

Offers

Same model, different listings. First-party, router, and aggregator rows stay separate so you can see the spread instead of a single blended number.

SourceProviderInputOutputCache readContext
models.devcheapestopenai/gpt-5.1-instantPoe$1.10$9$0.11128K
models.devopenai/gpt-5.1-instantVercel AI Gateway$1.25$10$0.13128K

Capabilities

  • Reasoning
  • Tool calling
  • Attachments
  • In: text
  • In: image
  • In: pdf
  • Out: text
Knowledge cutoff: 2024-10Released: 2025-11-12Family: gpt

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