GPT-6 Luna
No shutdown before this date. GPT-6 Luna stays on Amazon Bedrock until at least Sep 22, 2027.
≥ 11 mo- Earliest retirement
- ≥ 343 daysSep 22, 2027 · Amazon Bedrock
- Arena Text
- 1,443#47 of 128 · Arena
- GPQA Diamond
- 90.5%#35 of 108 · Epoch AI
- List price · $ per 1M
- $0.10 in $0.50 outOpenAI API · cached input $0.01
- Context window
- 1.1MMax output 128K tokens
Dates on every platform
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| OpenAI APIOpenAI: List models (GET /v1/models) (opens in a new tab) · checked Oct 14, 2026 | gpt-6-lunaActive | – | None set | – |
| Azure AI FoundryMicrosoft: Foundry Models sold by Azure (opens in a new tab) · checked Oct 14, 2026 | gpt-6-luna:2026-09-22Active | – | None set | – |
| Amazon BedrockAmazon Web Services: Amazon Bedrock ListFoundationModels, us-east-1 (opens in a new tab) · checked Oct 14, 2026 | openai.gpt-6-lunaActive | – | ≥ 11 moNot sooner than | – |
In us-east-1, requests go through a cross-Region inference profile (listed in aliases).
What breaks when you move off GPT-6 Luna
- Behavior
- Parameters
- Tooling
Intelligence
| Benchmark | Publisher | Score | Rank | Published |
|---|---|---|---|---|
| Arena Text | Arena | 1,443 ± 3 | #47 of 128 | Oct 8, 2026 |
| GPQA Diamond | Epoch AI | 90.5% ± 1.9% | #35 of 108 | Sep 22, 2026 |
| Arena WebDev | Arena | 1,581 ± 4 | #21 of 69 | Oct 8, 2026 |
| Arena Agent | Arena | 0 ± 0 | #19 of 35 | Oct 12, 2026 |
| FrontierMath Tier 4 | Epoch AI | 56.1% ± 7.8% | #16 of 58 | Sep 22, 2026 |
| FrontierMath Tiers 1-3 | Epoch AI | 78.9% ± 2.4% | #16 of 71 | Sep 22, 2026 |
| OTIS Mock AIME 2024-2025 | Epoch AI | 98.9% ± 0.7% | #15 of 105 | Sep 22, 2026 |
| SimpleQA Verified | Epoch AI | 41.4% ± 1.6% | #37 of 68 | Sep 22, 2026 |
Arena (arena.ai), https://arena.ai/leaderboard
Epoch AI, ‘Capabilities & benchmarking’. Published online at epoch.ai. Retrieved from ‘https://epoch.ai/benchmarks’ [online resource].
List prices
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
OpenAI APIgpt-6-luna | $0.10 | $0.01 | $0.50 | Sep 22, 2026Current · Requests over 272K input tokens are billed at higher long-context rates. Cache writes are billed separately. Batch and Flex bill less; Fast mode bills more. | OpenAI: Pricing (opens in a new tab) |
Azure AI Foundrygpt-6-luna:2026-09-22 | $0.10 | $0.01 | $0.50 | Sep 22, 2026Current · Global Standard short-context rate from the US East 2 price list. | Microsoft: Azure Retail Prices API (Foundry Models, US East 2) (opens in a new tab) |
Amazon Bedrockopenai.gpt-6-luna | $0.11 | $0.011 | $0.55 | Oct 14, 2026Current · Standard tier, short context (272K input tokens or fewer). Mantle in-Region and US geographic cross-Region inference; global cross-Region inference is priced lower. | Amazon Web Services: Amazon Bedrock model card: GPT-6 Luna (opens in a new tab) |
Change history
ShutdownGPT-4o, GPT-4o mini, GPT-4.1 and GPT-4.1 mini shut down on the OpenAI APIOpenAI API3 breaks
The gpt-4o-2024-08-06, gpt-4o-2024-11-20, gpt-4o-mini-2024-07-18, gpt-4.1-2025-04-14 and gpt-4.1-mini-2025-04-14 snapshots are removed. OpenAI names GPT-6 Luna as the replacement for all of them. Fine-tuned versions follow the same schedule.
- Platform
- OpenAI API
- Models
- GPT-4o, GPT-4o Mini, GPT-4.1, GPT-4.1 Mini
- Replacement
- GPT-6 Luna
- Announced
- ParametersWhen reasoning effort is not none, remove temperature, top_p and top_logprobs. Chat Completions requests must also drop logprobs.
- ToolingGPT-6 Sol and GPT-6 Luna support function calling in Chat Completions only with reasoning_effort none. Use the Responses API for reasoning with tools.
- PricingReplace prompt_cache_retention with prompt_cache_options.ttl set to 30m, and expect cache writes to be billed.
Source: OpenAI, Deprecations (opens in a new tab); OpenAI, Using GPT-6 (opens in a new tab)
API changeImage encoding fix changes GPT-6 Sol and Luna image resultsOpenAI API1 break
OpenAI fixed a bug in image encoding that degraded image understanding in GPT-6 Sol and GPT-6 Luna, in the API and Codex, including computer use.
- Platform
- OpenAI API
- Models
- GPT-6 Sol, GPT-6 Luna
- BehaviorResults on image inputs change without a model ID change. OpenAI recommends rerunning evaluations and retrying workflows affected by the issue.
ReleaseGPT-6 Luna and GPT-6 Sol available on Amazon BedrockAmazon Bedrock
Bedrock added GPT-6 Luna and GPT-6 Sol.
- Platform
- Amazon Bedrock
- Models
- GPT-6 Luna, GPT-6 Sol
Source: Amazon Web Services, Amazon Bedrock ListFoundationModels, us-east-1 (opens in a new tab)
ReleaseGPT-6 Sol and GPT-6 Luna available on Azure AI FoundryAzure AI Foundry
Microsoft added GPT-6 Sol and GPT-6 Luna to the generally available lineup in Foundry. Standard deployments are available in Global regions and US and EU Data Zones, and Provisioned Throughput is offered for Astra and Sol.
- Platform
- Azure AI Foundry
- Models
- GPT-6 Sol, GPT-6 Luna
Source: Microsoft, GPT-6 Astra, Sol, and Luna in Microsoft Foundry (opens in a new tab)
ReleaseGPT-6 Sol and GPT-6 Luna released on the OpenAI APIOpenAI API2 breaks
OpenAI released GPT-6 Sol and GPT-6 Luna, reasoning models that take text and image input and return text, in the Responses and Chat Completions APIs.
- Platform
- OpenAI API
- Models
- GPT-6 Sol, GPT-6 Luna
- ParametersWhen reasoning effort is not none, remove temperature, top_p and top_logprobs. Chat Completions requests must also drop logprobs.
- ToolingGPT-6 Sol and GPT-6 Luna support function calling in Chat Completions only with reasoning_effort none. Use the Responses API for reasoning with tools.
Source: OpenAI, Changelog (opens in a new tab); OpenAI, Using GPT-6 (opens in a new tab)