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
$1.00 / 1M
Output price
$6.00 / 1M
Knowledge cutoff
2026-02-16
Krater rank
#70
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-5.1
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 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 Terra 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 comparisonFAQ
Questions about GPT-5.6 Terra
Clear answers based on the model catalog and Krater access.
Use GPT-5.6 Terra in your API
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