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ModelOpenAI

GPT-5.1 mini

Model at OpenAI

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GPT-5.1 mini does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.

The basics

As of Nov 1
Status
Available

Updates

GPT-5.4, GPT-5.4 mini, GPT-5.4 nano

8 products from OpenAI and Perplexity AI

Retired

Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API

The changelog scheduled seven older OpenAI model IDs to retire on October 24, 2026 at 00:00 UTC. After the cutoff the IDs are no longer accepted or returned by model-list endpoints.

Before

openai/gpt-5.4, gpt-5.4-mini, gpt-5.4-nano, gpt-5.2, gpt-5.1, gpt-5 and gpt-5-mini accepted

After

These model IDs are no longer accepted

Action needed:
Switch direct model selections and fallback chains to a current OpenAI model such as openai/gpt-6-luna or openai/gpt-6-sol.
Full changelog, by month

Role

General-purpose model at OpenAI

  1. GPT-5.4 miniMar 2026 to now · 8 months

  2. GPT-5.1 mini

    Until Mar 2026
  3. GPT-5 miniAug 2025 to now · 1 year 3 months

Similar models

gpt-5-6-cyber

Model

GPT-5.6 Luna

$0.20 in, $1.20 out

GPT-5.6 Sol

$4 in, $20 out

Similar models for now. Real viewing data comes after launch.

What people say

Reviews

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Incidents

0 incidents in the last 90 days, from OpenAI's status page. Only major incidents or ones lasting 30 minutes or more are counted. Fewer records do not prove better uptime.