GPT 5.6 Terra
PremiumOpenAI's balanced GPT-5.6 tier — GPT-5.5-class quality for everyday work at half the price.
1M-token context with strong reasoning, coding, and tool use across general professional tasks. The default pick when you want frontier capability without flagship cost.
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GPT 5.6 Terra is competitively priced at $2.50/M tokens input and $15.00/M tokens output. Cached input reads are priced at $0.25/M tokens, making repeated context cheaper. The model supports vision/image input, extended reasoning, a 1.1M context window.
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Mistral Small 4vs GPT 5.6 TerraFrequently Asked Questions about GPT 5.6 Terra▼
When was GPT 5.6 Terra released?
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GPT 5.6 Terra was released on July 9, 2026.
Who created GPT 5.6 Terra?
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GPT 5.6 Terra was created by OpenAI.
How much does GPT 5.6 Terra cost?
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GPT 5.6 Terra costs $2.50/M input tokens and $15.00/M output tokens.
What is GPT 5.6 Terra API pricing?
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The GPT 5.6 Terra API is priced at $2.50 per million input tokens and $15.00 per million output tokens. You can access GPT 5.6 Terra through idapt.app alongside 200+ other AI models in one workspace.
Is GPT 5.6 Terra a reasoning model?
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Yes, GPT 5.6 Terra is a reasoning model. It can think step-by-step through complex problems before providing an answer, often yielding better results on difficult tasks like math, coding, and multi-step logic.
Does GPT 5.6 Terra support image or vision input?
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Yes, GPT 5.6 Terra supports vision/image input. You can share images in your conversation and the model will analyze and respond based on their content.
Does GPT 5.6 Terra support audio?
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No, GPT 5.6 Terra does not support audio input.
What is the context window of GPT 5.6 Terra?
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GPT 5.6 Terra has a context window of 1.1M tokens, meaning it can process approximately 787,500 words of context at once.
Is GPT 5.6 Terra open source?
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GPT 5.6 Terra is a proprietary model developed by OpenAI. The model weights and training data are not publicly available.
What is GPT 5.6 Terra good at?
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Based on benchmark data, GPT 5.6 Terra excels at: visual analysis and image understanding. It is OpenAI's capable model suitable for a wide range of tasks.
Where can I use GPT 5.6 Terra?
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You can chat with GPT 5.6 Terra on idapt.app — no separate API key required. idapt is an AI workspace with 200+ models, agents, computers, and tasks. You can also access GPT 5.6 Terra through OpenAI's own API or platform.