GPT-5.6 Terra

OpenAI

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The balanced tier of OpenAI's GPT-5.6 family for coding, agents and professional work.

Streaming JSON mode Tool calling Vision Reasoning Long context Multilingual

Model highlights

Balanced capability and speed
Million-token context
Tool calling and structured output
Vision and file input
Coding and agents

Modalities: IntextimageOuttext
Input / output: $2.00 / $12.00USD per 1M tokens
Context: 1.1M
Providers: 2 live
Released: Jul 9, 2026
Knowledge cutoff: February 16, 2026

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Playground

Preparing playground

Providers


	primary	4.7s	100%
	fallback	—	—

Performance

Response latency estimates

Time to first token

Generation speed · tok/s

Request success

Text-model timing and speed, plus API request success. Daily latency percentiles are estimates. Your request logs

API

POST/api/v1/chat/completionsOpenAI-compatible

gpt-5.6-terra

curl https://www.ninjachat.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $NINJACHAT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.6-terra",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'

messagestemperaturemax_completion_tokenstop_pstopfrequency_penaltypresence_penaltyseedstreamuserroutingtoolstool_choiceresponse_formatimage_url content partsreasoningreasoning_effort

Pricing

Input: $2.00/M tokens
Cached input: $0.20/M tokens
Output: $12.00/M tokens

Published USD rates. Actual cost depends on input, output, cache usage and request options.