GPT-5.1on Krater.ai
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5.
Released November 13, 2025
Specifications
GPT-5.1 at a glance
Context
400K tokens
Max output
128K tokens
Input
Image, Text, File
Output
Text
Input price
$1.25 / 1M
Output price
$10.00 / 1M
Krater rank
#42
Capabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
- Supports structured outputs
Good for
Benchmarks
Catalog data, not Krater benchmarks.
Coding index score
49.4
Agentic index score
21.6
Intelligence index score
37.5
Design Arena svg rank
#36
Design Arena dataviz rank
#42
Compare
Compare GPT-5.1
GPT-5.1 vs GPT-5.3 Chat
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful.
Open comparisonGPT-5.1 vs GPT-5.4 Nano
GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks.
Open comparisonGPT-5.1 vs GPT-5.6 Sol
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series.
Open comparisonFAQ
Questions about GPT-5.1
Clear answers based on the model catalog and Krater access.
Use GPT-5.1 in your API
Connect with Krater's unified API.