gpt-5.6-terra

OpenAIgpt-5.6-terra

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.

API Pricing

Price typeBilling expression
Official price
Base pricingPricing tier: base
  • Input usage × $2.00
  • Output usage × $12.00
  • Cached read × $0.20
  • Cache creation × $2.50
GPT_Pro×0.660% of official list price
Base pricingPricing tier: base
  • Input usage × $1.20
  • Output usage × $7.20
  • Cached read × $0.12
  • Cache creation × $1.50

Group multiplier: x0.6

GPT_Ultra×0.880% of official list price
Base pricingPricing tier: base
  • Input usage × $1.60
  • Output usage × $9.60
  • Cached read × $0.16
  • Cache creation × $2.00

Group multiplier: x0.8

Official pricing is subject to the model provider's latest published pricing and may vary by request method or service region. GPT_Pro, GPT_Ultra — TokenByte channel pricing. Actual prices and availability reflect current platform data.

Model information

Model providerOpenAI
Model IDgpt-5.6-terra
Context window1050000
InputTextImage
OutputText

Frequently asked questions

01

What is GPT-5.6 Terra?

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.
02

How much does GPT-5.6 Terra cost?

GPT-5.6 Terra costs $2.00/M input tokens and $12.00/M output tokens, with separate rates for Cache Read at $0.20/M tokens, Cache Write at $2.50/M tokens, and Web Search at $10.00/1K calls.
03

What is the context length of GPT-5.6 Terra?

GPT-5.6 Terra has a 1,050,000 token context window. It supports up to 128,000 completion tokens.