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Flagship — best answers, highest costCommercial API
GPT-6.1 Terra Pricing
OpenAI · openai-gpt-6-1-terra
Input / 1M tokens
$1.00
Output / 1M tokens
$5.00
Context window
1050k tokens
≈ 1,400 pages of text
Max output
128k tokens
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.0032
1,000 requests / month$3.20/mo10,000 requests / month$32.00/mo100,000 requests / month$320.00/moEstimate your own workloadOpens the calculator with GPT-6.1 Terra preloaded — adjust volume and token counts there.
Price history
Only one price point recorded so far.
The staircase chart appears once a price change is detected.
What it excels at
Processes 1M-token contexts with vision inputs, supporting detailed analysis of long documents and multimodal data.
The business tradeoff
Output pricing at $5 per million tokens raises costs for extended generations; large contexts increase latency.
Cheaper from OpenAI
Head-to-head
Vendor list rates, as of Oct 26, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.