Get API key

Model

GPT-5.6 Terra API pricing

Compare the published GPT-5.6 Terra (gpt-5.6-terra) list rate with corouter's outlet rate, and estimate a monthly token bill. GPT-5.6 Terra is the lower GPT-5.6 list rate and does not carry the Code tag. Send gpt-5.6-terra for long-context chat and vision at that rate.

OpenAI
GPT-5.6 Terra
OpenAI
−90%
Model ID
gpt-5.6-terra
Context window
1.1M
Vendor
OpenAI
Modalities
ChatReasoningVision
List pricecorouter
Input / Mtok$2.00$0.200
Output / Mtok$12.00$1.20
Cache write / Mtok$2.50$0.250
Cached input / Mtok$0.200$0.020

Prices in USD per million tokens, verified against billing on 2026-10-08.

Where this model fits

  • Long-context assistants that mix tools and prose
  • Retrieval answers over a large internal corpus
  • Screenshot and scan review at the lower GPT-5.6 rate

Estimates only. Actual billing depends on your real token counts, cache hit rate, and the prices in effect at request time.

Compare all prices·Browse all live models

From the blog