GPT-5.3 Chat
- Next shutdown
- None setNo date on 2 platforms
- Arena Text
- 1,450#41 of 128 · Arena
- Context window
- 128KMax output 16.4K tokens
- Released
- Mar 3, 2026OpenAI
Dates on every platform
2 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| OpenAI APIOpenAI: Deprecations (opens in a new tab) · checked Oct 14, 2026 | gpt-5.3-chat-latestShut down | Shut down | GPT-5.6 Sol | |
| Azure AI FoundryMicrosoft: Model retirement schedule - Microsoft Foundry (opens in a new tab) · checked Oct 14, 2026 | gpt-5.3-chat:2026-03-03Shut down | – | Shut down | Chat Latest |
Requests to retired deployments return 410 Gone.
What breaks when you move off GPT-5.3 Chat
Intelligence
Third-party results, credited below
| Benchmark | Publisher | Score | Rank | Published |
|---|---|---|---|---|
| Arena Text | Arena | 1,450 ± 2 | #41 of 128 | Oct 8, 2026 |
Arena (arena.ai), https://arena.ai/leaderboard
Change history
ShutdownGPT-5.2 Chat and GPT-5.3 Chat shut down on the OpenAI APIOpenAI API
gpt-5.2-chat-latest and gpt-5.3-chat-latest were removed. OpenAI recommends GPT-5.6 Sol.
- Platform
- OpenAI API
- Models
- GPT-5.2 Chat, GPT-5.3 Chat
- Replacement
- GPT-5.6 Sol
- Announced
ShutdownRemaining GPT-5 chat versions retired on Azure AI FoundryAzure AI Foundry1 break
Microsoft retired gpt-5-chat 2025-08-07, gpt-5.1-chat 2025-11-13, gpt-5.2-chat 2026-02-10 and gpt-5.3-chat 2026-03-03. It lists gpt-chat-latest as the replacement.
- Platform
- Azure AI Foundry
- Models
- GPT-5 Chat, GPT-5.1 Chat, GPT-5.2 Chat, GPT-5.3 Chat
- Replacement
- Chat Latest
- AvailabilityInference requests to retired deployments return 410 Gone.
Source: Microsoft, Model retirement schedule - Microsoft Foundry (opens in a new tab); Microsoft, Microsoft Foundry Models lifecycle and support policy (opens in a new tab)