GPT-5.6 Luna Pro API pricing
OpenAI · Budget price tier · Proprietary · released 2026-07. Prices in USD per 1 million tokens. Data snapshot: 2026-11-12.
A support ticket workload of 100K requests a month costs $90.00 on GPT-5.6 Luna Pro; the next cheaper model in the Budget price tier for this workload, Step 3.7 Flash, does it for $87.50. GPT-5.6 Luna Pro has held the same list price since 2026-08-17 and is the 125th cheapest of 160 models in the Budget price tier. None of its 2 hosts undercuts the price we quote. No Arena score is published for it, so it carries no Efficiency score and cannot hold the FinOps Friendly badge.
- Input: $0.20 per 1M tokens
- Output: $1.20 per 1M tokens
- Batch API (in/out): $0.10 / $0.60 per 1M tokens
- Prompt-cache read: $0.02 per 1M tokens
- Context window: 1M tokens
- Arena ELO: Not published
Available on
Direct API, Azure AI Foundry, OpenRouter
Curated by hand; check with the provider before committing.
Market position
On blended price ($0.90 per 1M tokens at 30% input, 70% output) it is cheaper than 21% of models in the Budget price tier: 125th cheapest of 160, tied with one other. Across every price tier it is cheaper than 59% of priced text models in the catalogue: 125th cheapest of 303, tied with one other. No Arena score has been published for GPT-5.6 Luna Pro, so this page does not rank it on quality and OptimNow's quality bars do not apply to it. 77 of the 160 models we list in the Budget price tier carry one. An unranked model is unmeasured, not poor: the benchmark needs votes, and a recent release has not had time to collect them.
Licence, size and capabilities
GPT-5.6 Luna Pro is recorded here as proprietary: access is through an API, priced by the token. Its parameter count is not published. Listed capabilities: Text, Vision, Reasoning, Agents. Filling its 1M context window once costs $0.20 in input tokens at list price.
Pricing by host
A host is a company that runs the model and sells it by the token: the model maker, a cloud platform like Amazon Bedrock, Azure or Vertex, or an independent host. One model, several hosts, and often several prices. This model is sold by 2 different hosts. The price we quote elsewhere on this page is marked. We quote one host's rate so that models stay comparable; it is not a recommendation to buy there.
The price we quote is already the cheapest of the 2 hosts: OpenAI at $0.20 input / $1.20 output per 1M tokens. All of them charge within 10% of one another.
| Host | Input $/1M | Output $/1M |
|---|---|---|
| OpenAI (model maker, price we quote) | $0.20 | $1.20 |
| Azure (price we quote) | $0.20 | $1.20 |
List prices as published on 2026-11-12, via OpenRouter. Negotiated rates, committed-use discounts and provisioned capacity are not shown.
Monthly cost at 100K requests, by business use case
From the after-discounts figure (prompt caching on the cached input share, batch API for async workloads, only where OpenAI publishes those rates), which assumes you implement both, to the list price. One figure means no discount is published.
| Use case | Tokens (in/out) | Monthly (after discounts – list) |
|---|---|---|
| Support Ticket | 1,500 / 500 | $75 – $90 |
| Knowledge Q&A | 2,000 / 800 | $112 – $136 |
| Meeting Summary | 10,000 / 1,200 | $167 – $344 |
| Marketing Content | 2,500 / 1,800 | $258 – $266 |
| Coding Task | 3,000 / 2,000 | $275 – $300 |
| Invoice Processing | 1,500 / 600 | $49 – $102 |
| Call Summary | 2,000 / 700 | $61 – $124 |
| Agent Workflow | 6,000 / 3,000 | $409 – $480 |
Price history
GPT-5.6 Luna Pro has been in our daily price archive since 2026-08-15. Its price series starts on 2026-08-17 at $0.20 input / $1.20 output per 1M tokens, because the earlier snapshots carried a data error that was corrected afterwards. No list price change since 2026-08-17. Last checked against the 2026-11-12 snapshot.
Alternatives to GPT-5.6 Luna Pro
GPT-5.6 Luna Pro carries no Arena score, so this page cannot place it against models of comparable quality. The alternatives below are its nearest neighbours on price in the Budget price tier.
- Next cheaper model in the Budget price tier: Qwen2.5 Coder 32B Instruct (Alibaba) at $0.898 blended, under 1% less.
- Next more expensive: LongCat 2.0 (meituan) at $0.93 blended, 3% more.
Other models from OpenAI
The 8 nearest to GPT-5.6 Luna Pro in price, of 48 other OpenAI models in the catalogue. Prices per 1M tokens, input then output.
- GPT-6 Luna Pro: $0.10 / $0.50
- GPT-4o-mini: $0.15 / $0.60
- gpt-oss-120b: $0.15 / $0.60
- GPT-5.6 Luna: $0.20 / $1.20
- GPT-5.4 Nano: $0.20 / $1.25
- GPT-4.1 Mini: $0.40 / $1.60
- GPT-5 Mini: $0.25 / $2.00
- GPT-5.1-Codex-Mini: $0.25 / $2.00
All 49 OpenAI models and prices
Common questions about GPT-5.6 Luna Pro pricing
- How much does GPT-5.6 Luna Pro cost?
- GPT-5.6 Luna Pro costs $0.20 per 1M input tokens and $1.20 per 1M output tokens. That is the model maker's own rate (OpenAI). Prices as listed on 2026-11-12.
- Which host is cheapest for GPT-5.6 Luna Pro?
- The price we quote is already the cheapest of the 2 hosts: OpenAI at $0.20 input / $1.20 output per 1M tokens. All of them charge within 10% of one another. Host rates as listed on 2026-11-12.
- Does GPT-5.6 Luna Pro offer batch or cached pricing?
- Yes, both. Batch API pricing is $0.10 per 1M input tokens and $0.60 per 1M output tokens, and prompt-cache reads cost $0.02 per 1M tokens, as listed on 2026-11-12.
- What would GPT-5.6 Luna Pro cost per month?
- With the Support Ticket profile (1,500 input and 500 output tokens per request), 100,000 requests a month cost about $90 on GPT-5.6 Luna Pro at the list price quoted on 2026-11-12.
- Can GPT-5.6 Luna Pro be self-hosted?
- No, as far as this site records. GPT-5.6 Luna Pro is recorded here as proprietary: access is through an API, priced by the token.
- Has the price of GPT-5.6 Luna Pro changed?
- GPT-5.6 Luna Pro has been in our daily price archive since 2026-08-15. Its price series starts on 2026-08-17 at $0.20 input / $1.20 output per 1M tokens, because the earlier snapshots carried a data error that was corrected afterwards. No list price change since 2026-08-17. Last checked against the 2026-11-12 snapshot.
It publishes a batch rate, and that discount is conditional: when the batch discount applies.
These are list prices. Your real cost also depends on caching and batching, negotiated discounts, marketplace agreements, and the contracts you already have. OptimNow audits exactly that.
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