GPT-5.6 Solon Krater.ai
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks
Released July 9, 2026
Specifications
GPT-5.6 Sol at a glance
Context
1.1M tokens
Max output
128K tokens
Input
File, Image, Text
Output
Text
Input price
$5.00 / 1M
Output price
$30.00 / 1M
Knowledge cutoff
2026-02-16
Krater rank
#57
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
77.4
Agentic index score
57.8
Intelligence index score
60.9
Compare
Compare GPT-5.6 Sol
GPT-5.6 Sol vs GPT-5 Nano
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments.
Open comparisonGPT-5.6 Sol vs GPT-5.1
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.
Open comparisonGPT-5.6 Sol vs GPT-4o (2024-11-20)
The 2024-11-20 version of GPT-4o offers a leveled-up creative writing ability with more natural, engaging, and tailored writing to improve relevance & readability.
Open comparisonFAQ
Questions about GPT-5.6 Sol
Clear answers based on the model catalog and Krater access.
Use GPT-5.6 Sol in your API
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