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
#65
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
#32
Design Arena dataviz rank
#38
Compare
Compare GPT-5.1
GPT-5.1 vs GPT-5.4
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for
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 comparisonGPT-5.1 vs GPT-5 Mini
GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks.
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.