GPT-6.1 Terra Pro API pricing
As of October 29, 2026, OpenAI GPT-6.1 Terra Pro costs $1.00 per million input tokens and $5.00 per million output tokens on OpenAI's own API, with cached input at $0.05 per million.
GPT-6.1 Terra Pro benchmarks and specs · Every OpenAI model's price
- Input, per million tokens$1.00
- Output, per million tokens$5.00
- Cached input, per million$0.05
- Context window1.05M tokens
- Max output128K tokens
- Output speedNot measured
What a request costs
Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.
| Workload | Tokens | One request | 1,000 requests | Fits the context window |
|---|---|---|---|---|
| Chat turn | 1K input + 500 output tokens | $0.0035 | $3.50 | Yes |
| Repository review | 50K input + 3K output tokens | $0.065 | $65.00 | Yes |
| Agent loop | 200K input + 10K output tokens | $0.250 | $250.00 | Yes |
| Solved coding task | One SWE-bench Verified attempt, divided by the share that succeed | Not computable | Not computable |
Price history
We have read OpenAI's own price every day since October 27, 2026. It has not changed yet; any change will be listed here with its date.
- October 27, 2026 First recorded: $1.00 input, $5.00 output
Cheaper models as good as GPT-6.1 Terra Pro
GPT-6.1 Terra Pro has no overall or coding score, so we make no quality claim against it.
GPT-6.1 Terra Pro pricing questions
- How much does GPT-6.1 Terra Pro cost per million tokens?
- $1.00 per million input tokens and $5.00 per million output tokens, as listed on OpenRouter on October 29, 2026.
- Does GPT-6.1 Terra Pro support prompt caching?
- Yes. OpenRouter lists cached input at $0.05 per million tokens, against $1.00 for uncached input.
- Has the price of GPT-6.1 Terra Pro changed?
- Not since we started recording it daily on October 27, 2026.