GPT-5.6 Terraon Krater.ai
GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic
Released July 9, 2026
Specifications
GPT-5.6 Terra at a glance
Context
1.1M tokens
Max output
128K tokens
Input
File, Image, Text
Output
Text
Input price
$2.00 / 1M
Output price
$12.00 / 1M
Knowledge cutoff
2026-02-16
Krater rank
#46
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
76.7
Agentic index score
50.2
Intelligence index score
56.6
Compare
Compare GPT-5.6 Terra
GPT-5.6 Terra 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-5.6 Terra 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 Terra 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 comparisonFAQ
Questions about GPT-5.6 Terra
Clear answers based on the model catalog and Krater access.
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