GPT-5.6 Luna
GPT-5.6 Luna is a fast, affordable GPT-5.6 model that brings strong capability at the lowest cost in the series.
text + image + file → text · made by OpenAI
$0.2→$1.2per Mtok in / out
OpenAI · 15 sellers
Available within a subscription 4 plans
Bought by the month. What a plan allows is the half of its price that a rate card cannot carry, so it is printed beside every one.
- ChatGPT FreeOpenAIunlimited text chats with GPT-5.6 Luna, subject to abuse guardrails; limited messages with uploads, limited and slower image generation, limited voice, limited deep research, limited memory and limited Codex$0a month
- ChatGPT GoOpenAImore messages with tools, more uploads, more image creation, more voice and longer memory than Free; the plan may include ads$8a month
- ChatGPT PlusOpenAIadvanced reasoning with GPT-5.6, expanded messages and uploads, expanded deep research, memory and context, projects, scheduled tasks and custom GPTs, and expanded Codex$20a month
- ChatGPT ProOpenAIfive or twenty times the usage of Plus, Pro reasoning, the maximum Codex tasks, unlimited and faster image creation, and maximum deep research$200a month
Sold by 36 ways
| Seller | Lane | Rate |
|---|---|---|
| Microsoft Azure AI cloud | flex | $0.1per Mtok in$0.6per Mtok outraw.githubusercontent.com · read 2026-10-31 |
| OpenAI api | batch | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cacheddevelopers.openai.com · read 2026-08-24 |
| Databricks cloud | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writemodels.dev · read 2026-10-31 |
| DigitalOcean cloud | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writemodels.dev · read 2026-10-31 |
| Microsoft Azure AI cloud | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writemodels.dev · read 2026-10-31 |
| OpenAI api | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cacheddevelopers.openai.com · read 2026-08-24 |
| AWS Bedrock cloud | standard | $0.22per Mtok in$1.32per Mtok out$0.022per Mtok cached$0.28per Mtok cache writemodels.dev · read 2026-10-31 |
| Databricks cloud | priority | $0.4per Mtok in$2.4per Mtok out$0.04per Mtok cachedraw.githubusercontent.com · read 2026-10-31 |
| Microsoft Azure AI cloud | long-context | $0.4per Mtok in$1.8per Mtok out$0.04per Mtok cachedprices.azure.com · read 2026-08-24 |
| Microsoft Azure AI cloud | priority | $0.44per Mtok in$2.64per Mtok out$0.044per Mtok cachedraw.githubusercontent.com · read 2026-10-31 |
| Requesty 3 ways | $0.09per Mtok in$0.54per Mtok out$0.009per Mtok cached | |
| Requesty aggregatornot on the seller's list today | openai flex | $0.09per Mtok in$0.54per Mtok out$0.009per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregatornot on the seller's list today | openai-responses flex | $0.09per Mtok in$0.54per Mtok out$0.009per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregatornot on the seller's list today | openai-responses | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cachedrouter.requesty.ai · read 2026-09-11 |
| Requesty aggregatornot on the seller's list today | azure swedencentral | $0.2per Mtok in$1.19per Mtok out$0.02per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregatornot on the seller's list today | bedrock us-east-2 | $0.2per Mtok in$1.19per Mtok out$0.02per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregatornot on the seller's list today | bedrock us-west-2 | $0.2per Mtok in$1.19per Mtok out$0.02per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregator | azure | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cachedrouter.requesty.ai · read 2026-10-09 |
| Requesty aggregator | openai | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cachedrouter.requesty.ai · read 2026-10-10 |
| Requesty aggregator | bedrock | $0.22per Mtok in$1.32per Mtok out$0.022per Mtok cachedrouter.requesty.ai · read 2026-08-28 |
| Nous Research 2 ways | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache write | |
| Nous Research aggregator | batch | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cachedinference-api.nousresearch.com · read 2026-09-12 |
| Nous Research aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writeinference-api.nousresearch.com · read 2026-09-12 |
| OpenRouter 7 ways | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache write | |
| OpenRouter aggregator | batch | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cachedopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | openai/flex | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cached$0.12per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writeopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | amazon-bedrock/us-east-1 | $0.22per Mtok in$1.32per Mtok out$0.022per Mtok cached$0.28per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | azure/eu | $0.22per Mtok in$1.32per Mtok out$0.022per Mtok cached$0.28per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | azure/us | $0.22per Mtok in$1.32per Mtok out$0.022per Mtok cached$0.28per Mtok cache writeopenrouter.ai · read 2026-08-26 |
| OpenRouter aggregator | openai/fast | $0.4per Mtok in$2.4per Mtok out$0.04per Mtok cached$0.5per Mtok cache writeopenrouter.ai · read 2026-08-30 |
| OpenRouter aggregatornot on the seller's list today | openai/priority | $0.4per Mtok in$2.4per Mtok out$0.04per Mtok cached$0.5per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| AtlasCloud aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cachedapi.atlascloud.ai · read 2026-09-20 |
| ElectronHub aggregator | standard | $0.2per Mtok in$1.2per Mtok outapi.electronhub.ai · read 2026-10-31 |
| GitHub Copilot aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writemodels.dev · read 2026-10-31 |
| Inference.net aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cachedapi.inference.net · read 2026-10-31 |
| RedPill aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writeapi.redpill.ai · read 2026-10-27 |
| Venice AI aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writemodels.dev · read 2026-10-31 |
| Vercel AI Gateway aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writeai-gateway.vercel.sh · read 2026-08-25 |
Measured 41 standings
| Place | Board | Metric | Score |
|---|---|---|---|
| 9thof 41 | Balrog — Epoch AI | Average progress (max) | 0.456 |
| 12thof 29 | Surface evolver bench — Epoch AI | Mean score (medium) | 0.619 |
| 13thof 17 | SWE-rebench Leaderboard (default window 15/05/2026–01/07/2026, 111 problems) | Resolved Rate (%) (medium) | 43.6 |
| 17thof 132 | Ale bench — Epoch AI | Performance (max) | 1667.4 |
| 17thof 122 | Frontiermath tiers 1 3 v2 — Epoch AI | mean_score (max) | 82.105 |
| 17thof 35 | Furniture assembly — Epoch AI | mean_score (max) | 42.5 |
| 21stof 69 | Deepswe — Epoch AI | Pass@1 (max) | 0.672 |
| 22ndof 84 | Proofbench — Epoch AI | Accuracy (max) | 60 |
| 22ndof 25 | Weirdml v3 — Epoch AI | Score (xhigh) | 5.158 |
| 23rdof 78 | Frontiermath tier 4 v2 — Epoch AI | mean_score (max) | 60.976 |
| 26thof 131 | Artificial Analysis · Agentic Index | Index | 42.1 |
| 27thof 35 | Blueprint bench 2 — Epoch AI | Score | 22.56 |
| 27thof 46 | Frontiercode — Epoch AI | Main score | 0.398 |
| 27thof 56 | Gdp pdf — Epoch AI | GDP.pdf score | 0.227 |
| 28thof 306 | OTIS Mock AIME 2024-2025 | mean_score (max) | 98.333 |
| 33rdof 326 | GPQA Diamond | mean_score (max) | 91.604 |
| 34thof 154 | Chess puzzles — Epoch AI | mean_score (max) | 43 |
| 37thof 163 | Artificial Analysis · Coding Index | Index | 71.4 |
| 43rdof 53 | LMArena · Agent | Net Improvement (%) | 1.48 |
| 43rdof 71 | Vending bench 2 — Epoch AI | Score | 4094.712 |
| 46thof 60 | Apex agents — Epoch AI | Pass@1 score | 0.43 |
| 48thof 165 | LMArena · Vision | Score (Elo) (xhigh) | 1258 |
| 48thof 173 | Weirdml — Epoch AI | Accuracy (high) | 60.86 |
| 49thof 141 | LMArena · WebDev | Score (Elo) (xhigh) | 1520 |
| 49thof 135 | Webdev arena — Epoch AI | Arena Score (xhigh) | 1518.87 |
| 50thof 93 | Simpleqa verified — Epoch AI | mean_score (max) | 41 |
| 53rdof 82 | Cursorbench — Epoch AI | Score (max) | 35.9 |
| 56thof 102 | Simplebench — Epoch AI | Score (AVG@5) | 0.468 |
| 59thof 142 | Mystery game puzzles — Epoch AI | mean_score (max) | 21 |
| 63rdof 260 | Critpt — Epoch AI | Accuracy (max) | 20.571 |
| 74thof 414 | LMArena · Text | Score (Elo) (xhigh) | 1452 |
| 74thof 197 | Lmca — Epoch AI | Score (max) | 48.54 |
| 75thof 298 | ARC-AGI-1 (Semi-Private) | Score (%) (max) | 90.67 |
| 77thof 235 | Scicode — Epoch AI | Score (max) | 53.588 |
| 78thof 282 | ARC-AGI-2 (Public Eval) | Score (%) (max) | 64.17 |
| 91stof 298 | ARC-AGI-2 (Semi-Private) | Score (%) (max) | 59.58 |
| 93rdof 235 | Dtbench — Epoch AI | Accuracy (xhigh) | 89.07 |
| 97thof 112 | ARC-AGI-3 (Semi-Private) | Score (%) (max) | 0.18 |
| 99thof 290 | Arc agi 2 — Epoch AI | Score (max) | 59.54 |
| 101stof 273 | ARC-AGI-1 (Public Eval) | Score (%) (max) | 91.25 |
| 102ndof 309 | Arc agi — Epoch AI | Score (max) | 88 |
About
GPT-5.6 Luna — a text model from OpenAI, sold by 15 companies from $0.2 in and $1.2 out per million tokens, placed 28th of 306 on OTIS Mock AIME 2024-2025.
It takes text, images and files and returns text, with a context window of 272,000 tokens. It was published in July 2026, trained on material up to February 2026. Its sellers say it can reason step by step and call a tool. The catalogue files it under reasoning, code and agents. Fifteen companies sell it. The cheapest is $0.2 in and $1.2 out per million tokens at AtlasCloud. Beside the standard rate there are faster, flex, separately routed, batch and regional lanes. It has been measured on 41 boards, and stands best at 28th of 306 on OTIS Mock AIME 2024-2025.
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 272,000 tokens
- Published
- July 2026
- Knowledge to
- February 2026
- Licence
- not read
- Sellers
- 15
- Price
- $0.2 in and $1.2 out per million tokens — AtlasCloud
- Boards
- 41
- Best place
- 28th of 306 — OTIS Mock AIME 2024-2025
Known as 24 names
GPT-5.6 Luna (high)GPT-5.6 Luna (max)GPT-5.6 Luna (xhigh)GPT-5.6 Luna (Low)GPT-5.6 Luna (Medium)GPT 5.6 Luna (xHigh)GPT-5.6 Luna [medium]Codex + GPT-5.6 Luna (max)openai/gpt-5.6-luna5.6 lunaopenai/gpt-5.6-luna:batchgpt-5.6-lunaazure/gpt-5.6-luna@eastus2azure/gpt-5.6-luna@swedencentralazure/openai-responses/gpt-5.6-luna@eastus2azure/openai-responses/gpt-5.6-luna@swedencentralbedrock/gpt-5.6-luna@us-east-1bedrock/gpt-5.6-luna@us-east-2bedrock/gpt-5.6-luna@us-west-2openai-responses/gpt-5.6-lunaopenai-responses/gpt-5.6-luna:flexopenai/gpt-5.6-luna:flexopenai/gpt-5.6-luna-batchOpenAI: GPT-5.6 Luna (batch)