Introducing support for GPT-5.1 in Warp

We’re excited to roll out support for OpenAI’s latest model, GPT-5.1, inside Warp. After weeks of testing, benchmarking, and tuning, GPT-5.1 has proven so capable that we’ve made it the default model for all new users starting today.

Under the hood of GPT-5.1

GPT-5.1 builds on what we liked about GPT-5. It's very smart and efficient, but notably GPT-5.1 is much faster due to adaptive reasoning. Under the hood, GPT-5.1 adjusts its reasoning automatically based on the complexity of your task. You still always get a smart answer, but you also usually get a much faster answer.

Here’s what stood out most in testing:

• Latency: GPT-5.1 consistently delivers faster results— 15% faster time to first token, and 40% faster task completion (measured on a subset of SWE-bench Verified)
• Quality: Maintains the high bar set by GPT-5
• Deep debugging: GPT-5.1 excels at root-causing and fixing tough, multi-layered problems. The kind that require tracing issues across files, dependencies, and environments.

Working with OpenAI

We worked closely with the OpenAI team to make sure GPT-5.1 performs well with Warp. This included optimizing prompt structure, tool definitions, and the balance between planning and execution. The collaboration helped us achieve a combination of speed, accuracy, and context awareness that feels natural inside the terminal.

Warp's collaboration and feedback has been invaluable in shaping GPT-5.1 to excel even more on coding. With significant gains in code quality, steerability, and speed, GPT-5.1 is performing exceptionally well inside Warp, and we’re thrilled to see it becoming the default experience for new users.

Try 5.1 in Warp

To give developers the chance to experience GPT-5.1 firsthand, we’re offering a limited-time promotion. Use the code BUILD510 to get your first month of Warp Build for $5.10. The code is valid for the first 510 users.