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
#83
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 Mini
GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads.
Open comparisonGPT-5.6 Terra vs GPT-5
GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience.
Open comparisonGPT-5.6 Terra vs GPT Chat Latest
GPT Chat Latest points to OpenAI's stable API alias chat-latest that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates
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
Connect with Krater's unified API.