GPT-6.1 Terra API price, and what each result really costs
OpenAI, listed 26 Oct 2026. Price checked 12 Nov 2026; unchanged since we started tracking it. Source: OpenAI's pricing page. openai/gpt-6.1-terra
List price per million tokens
- Input
- $1.00
- Cached input
- $0.05
- Output
- $5.00
- Context window
- 1.05M tokens
Note: Long context (>272K input tokens): $2 in / $0.10 cached / $7.50 out.
What it costs per task, and per task that works
Six common task shapes with typical token counts. The real cost counts the tries that get redone; the rates are examples, not measurements.
| Task | Per 1,000 tries | Per 1,000 that work, 8 in 10 | Per 1,000 that work, 6 in 10 | Per 1,000 that work, 4 in 10 |
|---|---|---|---|---|
| Support bot answer3,000 in / 300 out | $4.50 | $5.63 | $7.50 | $11.25 |
| Invoice field extraction2,500 in / 250 out | $3.75 | $4.69 | $6.25 | $9.38 |
| Lead scoring1,200 in / 100 out | $1.70 | $2.13 | $2.83 | $4.25 |
| Email reply draft1,500 in / 400 out | $3.50 | $4.38 | $5.83 | $8.75 |
| Translation900 in / 800 out | $4.90 | $6.13 | $8.17 | $12.25 |
| Search re-ranking4,000 in / 50 out | $4.25 | $5.31 | $7.08 | $10.63 |
Work out your own real cost per resultTest GPT-6.1 Terra on your own prompt
Compare GPT-6.1 Terra with
- GPT-5.4 mini$0.75 in / $4.50 outSwitch cost
- GPT-4.1 mini$0.40 in / $1.60 outSwitch cost
- Claude Haiku 4.5$1.00 in / $5.00 outSwitch cost
- DeepSeek V4 Pro$1.32 in / $3.96 outSwitch cost
- GLM-5.3$1.40 in / $4.40 outSwitch cost
Worked-through switches: Claude Sonnet 5.5 → GPT-6.1 Terra: cost and quality on real tasks, GPT-6.1 Sol → GPT-6.1 Terra: cost and quality on real tasks, GPT-6.1 Terra → GPT-6 Luna: cost and quality on real tasks
Questions
How much does the GPT-6.1 Terra API cost?
$1.00 per million input tokens and $5.00 per million output tokens, or $0.05 per million for cached input. Price checked 12 Nov 2026; unchanged since we started tracking it.
What does a result that works really cost with GPT-6.1 Terra?
A support bot answer (about 3,000 tokens in, 300 out) costs $0.0045 per try. If 6 in 10 work first time, each answer that works really costs $0.0075, because the redone ones were paid for too.