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.
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
1
Use Terra as the default GPT-5.6 model for most tasks
2
Switch to Sol only for the hardest reasoning or coding tasks
3
Cache repeated prompts to take advantage of low cache-hit pricing
4
Take advantage of Terra's full tool support for agent workflows
5
Monitor cost against Sol to confirm Terra is sufficient for your workload
PRICING
Freemium
Free tier available
Free tier includes limited features. Paid plans unlock full access, higher usage limits, and commercial usage rights.
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FREQUENTLY ASKED QUESTIONS
Q
Is GPT-5.6 Terra free?
A
GPT-5.6 Terra offers a free tier with optional paid upgrades.
Q
Does GPT-5.6 Terra have an API?
A
No, GPT-5.6 Terra does not appear to offer a public API.
Q
What is GPT-5.6 Terra best for?
A
GPT-5.6 Terra is best for 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.
Q
What platforms does GPT-5.6 Terra support?
A
GPT-5.6 Terra supports web, api, mobile.
Q
Is GPT-5.6 Terra open source?
A
No, GPT-5.6 Terra is not open source.
Q
How do I get started with GPT-5.6 Terra?
A
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...
Q
How do I use GPT-5.6 Terra?
A
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.
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