GPT-6.1 Terra: price, context window and capabilities
Prices updated 1 Nov 2026
GPT-6.1 Terra is a model from OpenAI (openai/gpt-6.1-terra). It supports reasoning. It supports tool use. It costs $1.00 per million input tokens and $5.00 per million output tokens, with a 1.1M-token context window.
What it costs in practice
Using the listed prices: a chat turn of 2,000 input and 500 output tokens costs about $0.0045, so 10,000 such turns cost about $45.00. Summarising a 100,000-token document into 2,000 tokens costs about $0.110. A long agent run that reads 1 million tokens and writes 50,000 costs about $1.25.
GPT-6.1 Terra compared with its closest rivals
| Model | Input / 1M | Output / 1M | Context | Chat turn |
|---|---|---|---|---|
| GPT-6.1 Terra OpenAI | $1.00 | $5.00 | 1.1M | $0.0045 |
| Qwen3.8 Max (0902) Qwen (Alibaba) | $2.00 | $6.00 | 1M | $0.0070 |
| Grok 4.7 xAI | $2.00 | $6.00 | 500K | $0.0070 |
| Grok 4.6 xAI | $2.00 | $6.00 | 500K | $0.0070 |
Rivals are the models from other providers with the same tool and reasoning support whose output price is closest to GPT-6.1 Terra's.
How it compares
Among the 40 models we track, GPT-6.1 Terra ranks #23 by input price and #23 by output price (1 is cheapest), and #2 by context window (1 is largest). Models with the same tool and reasoning support that cost less per output token: GLM 5.3 Flash ($0.158), DeepSeek V4 Flash 0731 ($0.238), Qwen3.8 Omni Flash ($0.470), Qwen3.8 Flash ($0.470). Models with a larger context window at the same or lower output price: Llama 4 Scout (1.3M).
More from OpenAI
All OpenAI models on one page: OpenAI API pricing.
- GPT-6.1 Terra Pro: $1.00 in / $5.00 out, 1.1M context
- GPT-6.1 Sol Pro: $2.00 in / $10.00 out, 1.1M context
- GPT-6.1 Sol: $2.00 in / $10.00 out, 1.1M context
In the news
Prices and limits come from OpenRouter's public model catalogue, last synced 1 Nov 2026. Provider pricing can differ from OpenRouter's and changes often; confirm on the provider's own page before you commit. See the guide to choosing a model or the full comparison.
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