THE TICKER · OPENAI · CHECKED DAILY · LAST CHANGE 2026-10-26
GPT-6.1 TERRA API PRICING
What OpenAI charges for GPT-6.1 Terra, in USD, cross-checked daily against the public pricing dataset. Effective price — if there's a promo running, this is the promo.
OpenAI publishes no separate marginal rate above the line — just this one number, same shape as Google's confirmed whole-request pricing. The scenarios below stay under the line; a large-codebase agent run often doesn't.
NOTE: Half of GPT-6.1 Sol on every line, cache included ($0.05/MTok). Against the GPT-5.6 Terra it succeeds: input halves and output drops from $12 to $5.
WHAT THINGS ACTUALLY COST ON GPT-6.1 TERRA
| Scenario | Tokens in / out | 1 run | 1,000 runs |
|---|---|---|---|
| A typical prompt (300 tokens in) | 300 / ~900 | $0.0048 | $4.80 |
| A 20-turn conversation (context re-sent) | 4,000 / ~4,000 | $0.02 | $24.00 |
| Summarizing a 10-page document | 8,000 / ~3,200 | $0.02 | $24.00 |
| One agent run (tools, retries, thinking) | 2,000 / ~12,000 | $0.06 | $62.00 |
| A code review request | 1,500 / ~3,750 | $0.02 | $20.25 |
Output sizes assume the same editorial ratios as the Burn Calculator (3x for prompts, 6x for agent runs). Estimates, not invoices.
VS. THE REST OF THE BOARD
“Same job” = a 1,000-token prompt with a 3,000-token reply, priced on both models. Cheaper is not always better. It is, however, always cheaper.
PRICE HISTORY
GPT-6.1 Terra joins the board at $1.00 in / $5.00 out per MTok: exactly half of GPT-6.1 Sol on every line, cache reads included ($0.05). Against the GPT-5.6 Terra it replaces, output drops from $12 to $5.
Source: developers.openai.com/api/docs/pricing · price last confirmed against the daily source on 2026-10-26. The full changelog lives at /pricing/changes.
NOW FIND OUT HOW MUCH OF THAT IS WASTE
GPT-6.1 Terra's price is fixed. Your token count isn't. Paste a real prompt into the Burn Calculator and see what it costs on GPT-6.1 Terra — and how much a leaner version would save at 1,000 runs. Or pull the whole board from the ticker.