GPT-5.6 Terra via the Tokenator API

What the model is for

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 tasks where capability and cost need to be balanced, offering strong performance at roughly half the cost of Sol.

Specification

Full nameGPT-5.6 Terra
API IDgpt-5.6-terra
Model vendorOpenAI
TypeText model (chat / completions)
Context window1M tokens
Max output128K tokens
Image inputyes
Tokenator usage multiplier1.7×
Input modalitiestext, image, file
Aliasescursor-gpt5.6-terra
Supported API formats/v1/chat/completions /v1/responses /v1/messages
Upstream providers3
Current statusavailable
Data updated2026-08-04

Benchmarks

Intelligence index45.6
Coding index64.7
Agentic index37

Artificial Analysis data loaded into the catalog for this model.

Upstream providers

ProviderMultiplier
OpenAI Plus1.7×
AiPartners Ltd1.7×
OpenAI Plus #21.7×

A request goes to the first available provider by priority; if it fails, Tokenator switches to the next one.

Example request

curl
curl https://api.tokenator.top/v1/chat/completions \
  -H "Authorization: Bearer sk-your-tokenator-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-terra",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Compatible tools

The model can be used in any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code, OpenClaw.

FAQ about GPT-5.6 Terra

What is the API ID of GPT-5.6 Terra?

gpt-5.6-terra — put this into the model field of your request.

What context window does GPT-5.6 Terra have?

1M tokens; max output is 128K tokens.

How many tokens will a request cost?

(input + output) × 1.7×. See the documentation for details.

Which tools support this model?

Any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code. Setup guides are in the integrations section.