Flagship — best answers, highest costCommercial API

GPT-6.1 Terra Pro Pricing

OpenAI · openai-gpt-6-1-terra-pro

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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/mo 10,000 requests / month$32.00/mo 100,000 requests / month$320.00/mo

Estimate your own workloadOpens the calculator with GPT-6.1 Terra Pro 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

Supports 1M-token context and 128k output for long-document analysis and multimodal tasks. Low input pricing supports high-volume ingestion workloads.

The business tradeoff

Output pricing at $5 per million tokens raises costs for generation-heavy use. Available only via commercial API with no self-hosting option.

Cheaper from OpenAI

GPT-6.1 Terra Pro (batch)OpenAI$0.0016/ typical request GPT-6.1 Terra (batch)OpenAI$0.0016/ typical request GPT-6 Luna ProOpenAI$0.0003/ typical request

Same tier from other providers

Claude Fable 5Anthropic$0.032/ typical request Qwen3.7 PlusQwen$0.0009/ typical request Grok 4.3xAI$0.0025/ typical request

Head-to-head

GPT-6.1 Terra Pro vs Claude Fable 5 →GPT-6.1 Terra Pro vs Qwen3.7 Plus →GPT-6.1 Terra Pro vs Grok 4.3 →

Vendor list rates, as of Oct 27, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.