GPT-5.6 Terra
- Price
- Freemium
- API
- No
- Weights
- No
WHAT IT DOES
GPT-5.6 Terra is the mid-tier model in OpenAI's GPT-5.6 family, released alongside Sol and Luna in July 2026. It shares the same 1.05M-token context window and 128K max output as Sol but is optimized for workloads that balance capability, latency, and cost. It supports text and image input, function calling, web search, file search, computer use, image generation, and code interpreter, making it a practical default for general-purpose reasoning and agentic workflows.
WHY WE PICKED IT
Terra is the sensible default for most GPT-5.6 work: it delivers the lion's share of Sol's capability at roughly 40% of the cost and is the default model for ChatGPT Free and Go users.
QUICK FACTS
STRENGTHS
- ✓1.05M-token context window with a 128K output ceiling
- ✓Priced at $2/M input and $12/M output tokens after the July 30, 2026 cut
- ✓Supports the same tool suite as Sol: web search, file search, computer use, image generation
- ✓Default model for ChatGPT Free and Go users
- ✓Strong balance of latency, cost, and capability for everyday work
LIMITATIONS
- ⚠Not as capable as Sol on the hardest frontier reasoning or coding tasks
- ⚠Overkill (and pricier than Luna) for very simple classification tasks
- ⚠Requests above 272K tokens are billed at 2x input and 1.5x output for the full request
- ⚠Newly released, so long-term reliability data is still limited
GETTING STARTED
Access GPT-5.6 Terra via ChatGPT (it is the default for Free and Go users) or through the OpenAI API using the gpt-5.6-terra snapshot. Standard pricing is $2/M input and $12/M output tokens, with cache hits at $0.20/M. It is the best starting point for GPT-5.6 API work; move up to Sol only when tasks genuinely require frontier-level reasoning.
QUICK TIPS
USE CASE EXAMPLES
Drafting and Editing Documents
Generate, revise, and proofread long-form documents at lower cost than Sol.
- Upload or paste the document into ChatGPT or the API
- Ask for an outline, draft, or revision
- Iterate on tone and structure
- Fact-check and finalize
- Export the result to your preferred format
General-Purpose Coding Assistant
Get code explanations, refactoring suggestions, and function-level generation.
- Paste the code or describe the task
- Ask for an explanation, refactor, or test cases
- Review the generated code carefully
- Run tests and iterate
- Move complex architectural work to Sol if needed
PRICING
Free tier includes limited features. Paid plans unlock full access, higher usage limits, and commercial usage rights.
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EXPLORE ALTERNATIVES
Compare GPT-5.6 Terra with 5+ similar llms AI tools.
FREQUENTLY ASKED QUESTIONS
Is GPT-5.6 Terra free?
GPT-5.6 Terra offers a free tier with optional paid upgrades.
Does GPT-5.6 Terra have an API?
No, GPT-5.6 Terra does not appear to offer a public API.
What is GPT-5.6 Terra best for?
GPT-5.6 Terra is best for Balanced Cost and Capability. GPT-5. Terra is the sensible default for most GPT-5.6 work: it delivers the lion's share of Sol's capability at roughly 40% of the cost and is the default model for ChatGPT Free and Go users.
What platforms does GPT-5.6 Terra support?
GPT-5.6 Terra supports web, api, mobile.
Is GPT-5.6 Terra open source?
No, GPT-5.6 Terra is not open source.
How do I get started with GPT-5.6 Terra?
Access GPT-5.6 Terra via ChatGPT (it is the default for Free and Go users) or through the OpenAI API using the gpt-5.6-terra snapshot. Standard pricing is $2/M input and $12/M output tokens, with cache hits at $0.20/M. It is the best starting point for GPT-5.6 API work; move up to Sol only when task...
How do I use GPT-5.6 Terra?
GPT-5.6 Terra is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses. It excels at 1.05m-token context window with a 128k output ceiling.
FEATURED ON CURATEDAI
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