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GPT-5.6 Luna Pro Pricing

OpenAI · openai-gpt-5-6-luna-pro

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Input / 1M tokens
$1.00
Output / 1M tokens
$6.00
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)$0.0036
1,000 requests / month$3.60/mo10,000 requests / month$36.00/mo100,000 requests / month$360.00/mo
Estimate your own workloadOpens the calculator with GPT-5.6 Luna Pro preloaded — adjust volume and token counts there.

Price history

List price per 1M tokens since we started tracking in Jul 2026. The lines are flat because the price hasn't changed since then.

What it excels at

Processes 1M-token contexts and vision inputs for long-document analysis and multimodal reasoning at high volume.

The business tradeoff

Output tokens priced at $6/M; performance and latency tied to commercial API with no local deployment option.

Cheaper from OpenAI

GPT-5.4 MiniOpenAI$0.0027/ typical requestGPT-5.4 NanoOpenAI$0.0007/ typical request

Same tier from other providers

Claude Fable 5Anthropic$0.032/ typical requestQwen3.7 PlusQwen$0.0009/ typical requestGrok 4.3xAI$0.0025/ typical request

Head-to-head

GPT-5.6 Luna Pro vs Claude Fable 5 →GPT-5.6 Luna Pro vs Qwen3.7 Plus →GPT-5.6 Luna Pro vs Grok 4.3 →

Vendor list rates, as of Jul 9, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.