GPT-5.6 Terra: API pricing, providers and specs
GPT-5.6 Terra is a text model by OpenAI. 27 providers serve it, from $9.60 to $15 /1M; the lowest price is at APIMart.
How GPT-5.6 Terra compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $9.60 /1M, its lowest price is above 86% of comparable models (median $1.10).
- Its 1.05M-token context window is larger than 95% of them (median 262K), about 1580 pages of text.
- On LMArena's WebDev board it ranks #42 of the 64 comparable models scored there.
- 27 providers serve it; 94% of comparable models have fewer.
GPT-5.6 Terra prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| APIMart | $1.60/1M | $9.60/1M | — | — |
 CometAPI | $1.60/1M | From$9.60/1M | — | — |
| OpenAIOfficial | $2/1M | From$12/1M | $0.20/1M | — |
| ZenMux | $2/1M | From$12/1M | $0.20/1M | 1.05M |
 CrossModel | $2/1M | From$12/1M | $0.20/1M | — |
 Opper | $2/1M | $12/1M | $0.20/1M | — |
 Requesty | $2/1M | From$12/1M | $0.20/1M | 1.05M |
 Ofox | $2/1M | $12/1M | $0.20/1M | 1.05M |
 Venice AI | $2/1M | $12/1M | $0.20/1M | — |
 OrcaRouter | $2/1M | $12/1M | $0.20/1M | 1.05M |
| Vercel AI Gateway | $2/1M | From$12/1M | $0.20/1M | 1.05M |
 AIHubMix | $2/1M | From$12/1M | $0.20/1M | 1.05M |
 Impossibl | $2/1M | From$12/1M | $0.20/1M | — |
| OpenRouter | $2/1M | From$12/1M | $0.20/1M | 1.05M |
| DevPass (LLM Gateway) | $2/1M | From$12/1M | $0.20/1M | — |
 Perplexity | $2/1M | From$12/1M | $0.20/1M | — |
 APIYI | $2/1M | $12/1M | — | — |
 LaoZhang API | $2/1M | $12/1M | — | — |
 CrazyRouter | $2/1M | $12/1M | — | — |
| Atlas Cloud | $2/1M | $12/1M | $0.20/1M | — |
 Azure | $2/1M | From$12/1M | $0.20/1M | — |
 FastRouter | $2/1M | From$12/1M | $0.20/1M | 1.05M |
 Jiekou.AI | $2/1M | $12/1M | $0.20/1M | — |
| AI/ML API | $2.12/1M | $12.70/1M | $0.212/1M | — |
 Cortecs | $2.21/1M | $13.26/1M | $0.221/1M | — |
 Prime Inference | $2.50/1M | $15/1M | — | — |
| Replicate | $2.50/1M | $15/1M | — | — |
- APIMart$9.60
- CometAPIFrom$9.60
- Opper$12
- Ofox$12
- Venice AI$12
- OrcaRouter$12
- APIYI$12
- LaoZhang API$12
- CrazyRouter$12
- Atlas Cloud$12
- Jiekou.AI$12
- OpenAIOfficialFrom$12
Specs
- Type
- Text
- Maker
- OpenAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 1.05M≈ 1580 pages of text
- Max output
- 128K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- Jul 9, 2026
- License
- proprietary
- Open weights
- No, API only
- Arena score
- 1521WebDev
Alternatives to GPT-5.6 Terra
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| GPT-5.6 Terrathis model | $9.60/1M | 1.05M | 1521 | 27 |
 Gemini 4 Argon | $8/1M | 1.05M | 1673 | 26 |
| Kimi K3 | $8.28/1M | 1.05M | 1655 | 47 |
 Muse Wonder | $16/1M | 1.05M | — | 14 |
| Claude Opus 5.5 | $16/1M | 1M | 1807 | 33 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
| Grok 4.7 | $4.80/1M | 500K | 1637 | 28 |
| Muse Spark 1.3 | $4.25/1M | 1.05M | 1657 | 11 |
| Claude Sonnet 5.5 | $8/1M | 1M | 1767 | 32 |
More from OpenAI
GPT-5.6 Terra FAQ
APIMart, at $9.60 /1M. 27 providers serve GPT-5.6 Terra; the table above lists every one with its price.
GPT-5.6 Terra reads up to 1.05M tokens per request and writes up to 128K.
No. GPT-5.6 Terra is only available through an API; OpenAI does not publish its weights.
27 API providers serve GPT-5.6 Terra. Compare their prices above, or open a provider to see everything it offers.
Can't find what you're looking for? Contact us