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OpenAI: GPT-5.6 Terra API Pricing
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...
How much does OpenAI: GPT-5.6 Terra cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: GPT-5.6 Terra costs about $44 ($20 input + $24 output). Try your own volumes in the cost calculator.
What is the official OpenAI: GPT-5.6 Terra price?
| Official (openai) | Catalog (OpenRouter) | |
|---|---|---|
| Input /1M | $2 | $2 |
| Output /1M | $12 | $12 |
| Cached input /1M | $0.2 | $0.2 |
✓ Matches the official list price. Source: openai official pricing page, checked 2026-10-21.
What are cheaper alternatives to OpenAI: GPT-5.6 Terra?
- MoonshotAI: Kimi K3 (batch) — $2.28 in / $11.4 out per 1M
- Xiaomi: MiMo-V2.6-Pro-UltraSpeed — $4.35 in / $8.7 out per 1M
- OpenAI: GPT Audio — $2.5 in / $10 out per 1M
- Cohere: Command A — $2.5 in / $10 out per 1M
- OpenAI: GPT-4o (2024-11-20) — $2.5 in / $10 out per 1M
- Cohere: Command R+ (08-2024) — $2.5 in / $10 out per 1M
Compare OpenAI: GPT-5.6 Terra with other models
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Frequently asked questions
How much does OpenAI: GPT-5.6 Terra cost?
OpenAI: GPT-5.6 Terra costs $2 per 1M input tokens and $12 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $44.
What is the context window of OpenAI: GPT-5.6 Terra?
OpenAI: GPT-5.6 Terra has a context window of 1,050,000 tokens and can return up to 128,000 output tokens per response.
What are cheaper alternatives to OpenAI: GPT-5.6 Terra?
Cheaper models include MoonshotAI: Kimi K3 (batch) ($2.28 in / $11.4 out), Xiaomi: MiMo-V2.6-Pro-UltraSpeed ($4.35 in / $8.7 out), OpenAI: GPT Audio ($2.5 in / $10 out). See the full list on this page.
Is OpenAI: GPT-5.6 Terra free to use?
No. OpenAI: GPT-5.6 Terra is a paid model at $2 input / $12 output per 1M tokens. 20 free models are listed on the free models page.
What is the official price of OpenAI: GPT-5.6 Terra?
On openai's official pricing page (checked 2026-10-21), OpenAI: GPT-5.6 Terra is listed at $2 per 1M input tokens and $12 per 1M output tokens. The catalog price tracked on this page matches it exactly.
Provider: openai · Model ID: openai/gpt-5.6-terra · Modality: text+image+file->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices