LiteLLMModels

GPT-5.6 Terra API Pricing

As of October 10, 2026, GPT-5.6 Terra costs $2.00 per 1M input tokens and $12.00 per 1M output tokens on OpenAI, with cache reads at $0.20 and cache writes at $2.50 per 1M tokens. Across 9 providers on LiteLLM, the input price ranges from $2.00 to $2.50. It has a 922,000-token context window and returns up to 128,000 tokens per response.

By OpenAIModel ID gpt-5.6-terraPrices updated Checked
Input
$2.00 / 1M tokens
Output
$12.00 / 1M tokens
Cache read
$0.20 / 1M tokens
Context window
922,000 tokens
Max output
128,000 tokens
Providers
9
Added to LiteLLM
July 9, 2026

GPT-5.6 Terra pricing by provider

14 listings across 9 providers. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

ProviderModel name in LiteLLMInputOutputCache readCache writeBatch inBatch outContext
OpenAIgpt-5.6-terra$2.00$12.00$0.20$2.50$1.00$6.00922K
AIHubMixaihubmix/gpt-5.6-terra$2.00$12.00$0.20$2.50––1M
Amazon Bedrock Mantlebedrock_mantle/openai.gpt-5.6-terra$2.20$13.20$0.22$2.75––1M
Azure OpenAIazure/gpt-5.6-terra$2.00$12.00$0.20$2.50––922K
Azure OpenAIsnapshot 2026-07-09azure/gpt-5.6-terra-2026-07-09$2.00$12.00$0.20$2.50––922K
ChatGPT Subscriptionchatgpt/gpt-5.6-terra––––––1M
Databricksdatabricks/databricks-gpt-5-6-terra$2.50$15.00$0.25$3.125––922K
GitHub Copilotgithub_copilot/gpt-5.6-terra––––––272K
Perplexityperplexity/openai/gpt-5.6-terra$2.00$12.00$0.20––––
Amazon BedrockGlobal cross-regionglobal.openai.gpt-5.6-terra$2.00$12.00$0.20$2.50––1M
Amazon BedrockUS cross-regionus.openai.gpt-5.6-terra$2.20$13.20$0.22$2.75––1M
Amazon Bedrock Mantleus-gov-west-1bedrock_mantle/us-gov-west-1/openai.gpt-5.6-terra$2.70$16.20$0.27$3.375––1M
Azure OpenAIeuazure/eu/gpt-5.6-terra$2.20$13.20$0.22$2.75––922K
Azure OpenAIusazure/us/gpt-5.6-terra$2.20$13.20$0.22$2.75––922K

Other GPT-5.6 Terra prices on OpenAI

Priority input$4.00 per 1M tokens
Priority output$24.00 per 1M tokens
Flex input$1.00 per 1M tokens
Flex output$6.00 per 1M tokens
Input above 272K tokens$4.00 per 1M tokens
Output above 272K tokens$18.00 per 1M tokens
Cache read above 272K tokens$0.40 per 1M tokens
Web search$10.00 per 1K searches

What GPT-5.6 Terra costs in practice

1,000 requests with 2,000 input and 500 output tokens each

OpenAI$10.00
AIHubMix$10.00
Azure OpenAI$10.00
Perplexity$10.00
OpenAI batch$5.00

100 long-document requests with 100,000 input and 2,000 output tokens each

OpenAI$22.40
AIHubMix$22.40
Azure OpenAI$22.40
Perplexity$22.40

GPT-5.6 Terra features

Input: text, image. Output: text.

Use GPT-5.6 Terra with LiteLLM

Call GPT-5.6 Terra through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import completion

response = completion(
    model="gpt-5.6-terra",
    messages=[{"role": "user", "content": "Hello!"}],
)
Proxy config.yaml
model_list:
  - model_name: gpt-5.6-terra
    litellm_params:
      model: gpt-5.6-terra
      api_key: os.environ/OPENAI_API_KEY
Call the proxy
curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "gpt-5.6-terra",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

GPT-5.6 Terra FAQ

How much does GPT-5.6 Terra cost?

GPT-5.6 Terra costs $2.00 per 1M input tokens and $12.00 per 1M output tokens on OpenAI, with cache reads at $0.20 and cache writes at $2.50 per 1M tokens. Batch requests cost $1.00 per 1M input tokens and $6.00 per 1M output tokens. Above 272K input tokens, input costs $4.00 and output costs $18.00 per 1M tokens. Across 9 providers on LiteLLM, the input price ranges from $2.00 to $2.50.

What is the context window of GPT-5.6 Terra?

GPT-5.6 Terra has a 922,000-token context window and returns up to 128,000 tokens per response.

Which providers offer GPT-5.6 Terra?

GPT-5.6 Terra is available from 9 providers through LiteLLM: OpenAI, AIHubMix, Amazon Bedrock Mantle, Azure OpenAI, ChatGPT Subscription, Databricks, GitHub Copilot, Perplexity and Amazon Bedrock. The lowest price is on OpenAI.

How do I call GPT-5.6 Terra with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="gpt-5.6-terra", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

What features does GPT-5.6 Terra support?

GPT-5.6 Terra supports function calling, parallel tool calls, structured output, image input, PDF input, reasoning, prompt caching and web search.

When did LiteLLM add GPT-5.6 Terra?

GPT-5.6 Terra was added to LiteLLM's model price file on July 9, 2026.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:

LiteLLM docs: OpenAI, AIHubMix, Amazon Bedrock Mantle, Azure OpenAI, ChatGPT Subscription, Databricks.

Provider pages: OpenAI, AIHubMix, Amazon Bedrock Mantle, Azure OpenAI, ChatGPT Subscription, Databricks, GitHub Copilot, Perplexity, Amazon Bedrock.