OpenAI
Pro
GPT-5.1 Chat
gpt-5.1-chat
Fine-tuned for natural conversation on Pro — fluid dialogue, long-term coherence, adaptive tone.
Technical Specifications
| API Identifier | gpt-5.1-chat |
|---|---|
| Plans | Pro |
| Maximum Context | 128 000 tokens |
| Vision (images) | No |
| Native Web Access | No |
| Image Generation | No |
| Input Cost | $1.25 / M tokens |
| Output Cost | $10.00 / M tokens |
Overview
GPT-5.1 Chat is the conversational variant of GPT-5.1, fine-tuned to excel at long, natural dialogue. Its specific training lets it adapt its tone, maintain coherence over long sessions, and produce particularly fluid and engaging responses. It's available on Pro for users who need a high-level assistant for conversation.
Strengths
Natural DialogueLong-term CoherenceAdaptive Tone
Cas d'usage
Conversational Coaching
Long coaching, mentoring, or personalized support sessions.
Advanced Personal Assistant
Ongoing dialogue on complex topics with context memory.
Roleplay & Simulation
Simulation scenarios, training, and professional role-playing.
Pricing
Input Tokens
$1.25
per million tokens
Output Tokens
$10.00
per million tokens
Related Models
Frequently Asked Questions
Does GPT-5.1 Chat maintain context over long conversations?
Yes, with a 128K token context, GPT-5.1 Chat can maintain very long conversations with excellent memory and coherence.
When does Mingo choose GPT-5.1 Chat?
Mingo selects GPT-5.1 Chat for general conversations on Pro that require natural, engaging dialogue on a wide range of topics.
Chat with GPT-5.1 Chat on Mingo Pro
Natural, engaging conversations — available on the Pro plan.
Discover Mingo Pro