#164
OP
GPT-4.1-nano
OpenAI
11.4 LLMBoard
OpenAI model product
GPT-5.1 Instant is the next iteration of GPT-5, designed to be more conversational than earlier chat models. It features improved instruction following and an adaptive reasoning capability that lets it decide when to think before responding. GPT-5.1 Instant offers clearer and more engaging interactions, reducing jargon and enhancing user comprehension. It demonstrates significant improvements in coding tasks, making it a valuable tool for developers. GPT-5.1 Auto routes each query to the model best suited for it, so users typically don't need to choose a model manually.
Updated Aug 10, 2026. Default version: GPT-5.1 Instant
Structured fields from the published default version.
This profile uses the latest version under this unique model that has a calculated LLMBoard score. Arena and price are excluded.
No published version under this unique model currently has enough benchmark coverage to calculate a score.
Published benchmark records for the scored version currently unavailable.
No published benchmark result is linked to the scored version.
Preference and agent-evaluation signals from published Arena datasets.
The default version has no published Arena rows, or its source alias has not been resolved.
Official vendor API PAYG pricing is summarized first. The table then lists individual provider offerings without treating their minimum as the official price.
| Poe | openai/gpt-5.1-instant | global | $1.1 | $9 | 128K | |
| Vercel AI Gateway | openai/gpt-5.1-instant | global | $1.25 | $10 | 128K |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
All published versions linked to this unique model. The score columns identify the version used by the current overall ranking.
| GPT-5.1 Instant | N/A | N/A | 400K | 128K | No | Proprietary |
A concise description based on the published model registry.
GPT-5.1 Instant is the next iteration of GPT-5, designed to be more conversational than earlier chat models. It features improved instruction following and an adaptive reasoning capability that lets it decide when to think before responding. GPT-5.1 Instant offers clearer and more engaging interactions, reducing jargon and enhancing user comprehension. It demonstrates significant improvements in coding tasks, making it a valuable tool for developers. GPT-5.1 Auto routes each query to the model best suited for it, so users typically don't need to choose a model manually.
Use the benchmark, Arena and pricing sections above as separate evidence. A missing field means the current data snapshot does not support that claim.
Data snapshot: 2026-08-07. Editorial model content is not available in the backend.
Recommendations prioritize the same model type and family, then the closest published LLMBoard score.
Common questions about GPT-5.1-Instant.
GPT-5.1-Instant's default version was released on Nov 12, 2025.
No official standard PAYG price is currently available for GPT-5.1-Instant. The lowest tracked third-party offer starts at $1.1 input and $9 output via Poe.
GPT-5.1-Instant is published under OpenAI in the model registry.
The default version has a 400K token context window.
No. The default version is not marked as having publicly available weights.
2 published provider offerings are linked to the default version.
No nearby ranked alternatives are currently available.