GPT-5.1 Smarter, More Conversational
Smarter & Warmer. Experience an AI that understands not just what you say, but how you feel.
GPT 5.1 - Two Modes, One Intelligence
GPT-5.1 Instant: Warmer, faster, and more playful.
Conversational by default, adapting to your tone.
Adaptive reasoning for quick but smart answers.
Adaptive reasoning for quick but smart answers.
GPT-5.1 Thinking: Deep reasoning, simplified.
Dynamically adjusts thinking time for complex tasks.
Clearer explanations with less jargon.
Clearer explanations with less jargon.
Evolution of Intelligence
See how GPT-5.1 improves upon its predecessor.
Feature | GPT-5.1 | GPT-5 |
|---|---|---|
| Performance Comparision | ||
Communication Style | Warm & Conversational | Professional & Formal |
Reasoning Model | Integrated & Adaptive | Separate Model |
Instruction Following | Near-Perfect Reliability | Near-Perfect Reliability |
Clarity | Accessible & Jargon-Free | Technical & Detailed |
Tone Control | Enhanced Customization | Standard |
Good news! You can use GPT-5.1 in Monica AI!
Monica AI also integrates ChatGPT-5, Claude 4.5 Haiku, Claude 4.5 Sonnet, Gemini 3 Pro and many other powerful large language models.
Frequently Asked Questions
What is the main difference between GPT-5 and GPT 5.1?
The biggest difference is the 'warmth' and conversational ability. GPT-5.1 is designed to be more approachable, playful, and easier to talk to, while also integrating adaptive reasoning directly into the instant model.
Is GPT 5.1 smarter than GPT-5?
Yes. GPT-5.1 shows significant improvements on math and coding benchmarks (like AIME 2025). It also hallucinates less and follows instructions more reliably.
What is Adaptive Reasoning?
Adaptive reasoning allows the model to decide when it needs to 'think' before answering. It spends more time on complex problems and responds instantly to simple ones, optimizing both speed and quality.
Is GPT-5.1 free?
No, GPT-5.1 is not free. You can use GPT-5.1 by subscribing to it through Monica, consulting our pricing page.