OpenAI model product
GPT-5.3
3 Chat is the instant model used in ChatGPT.
Updated Aug 17, 2026. Default version: GPT-5.3 Chat
LLMBoard Score39.7GPT-5.3 Chat
Coverage20%2 benchmark families
Context window128KTokens
Official input price$1.75OpenAI API
GPT-5.3 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
GPT-5.3 Benchmark Results
Benchmark scores for GPT-5.3 Chat.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkHealthBench Hard | Score25.9% | Rank06 | Participants9 | Percentile37.5% | EvidenceC | Evaluated |
| BenchmarkHealthBench | Score54.1% | Rank07 | Participants9 | Percentile25.0% | EvidenceC | Evaluated |
GPT-5.3 Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenavision style control | Categoryoverall | Rank57 | Rating / score1225.3 | Votes40,181 | ObservationsN/A | Result date |
| Arenavision | Categoryoverall | Rank59 | Rating / score1231.7 | Votes40,181 | ObservationsN/A | Result date |
| Arenatext style control | Categoryoverall | Rank64 | Rating / score1448.6 | Votes32,871 | ObservationsN/A | Result date |
| Arenatext style control | Categoryoverall | Rank96 | Rating / score1426.6 | Votes31,697 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryoverall | Rank107 | Rating / score1422.1 | Votes7,761 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryoverall | Rank111 | Rating / score1418.5 | Votes32,678 | ObservationsN/A | Result date |
| Arenatext | Categoryoverall | Rank130 | Rating / score1403.6 | Votes31,697 | ObservationsN/A | Result date |
| Arenatext | Categoryoverall | Rank144 | Rating / score1387.6 | Votes32,871 | ObservationsN/A | Result date |
GPT-5.3 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $1.75 input, $14 output per 1M
- Official provider
- OpenAI
- Lowest third-party
- From $1.75 input, $14 output per 1M via OrcaRouter
- Tracked offerings
- 6
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderOrcaRouter | Provider model IDopenai/gpt-5.3-chat-latest | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context128K | Updated |
| ProviderOpenAI | Provider model IDgpt-5.3-chat-latest | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context128K | Updated |
| ProviderMerge Gateway | Provider model IDopenai/gpt-5.3-chat-latest | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context128K | Updated |
| ProviderCloudflare AI Gateway | Provider model IDopenai/gpt-5.3-chat-latest | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context128K | Updated |
| ProviderZenMux | Provider model IDopenai/gpt-5.3-chat | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context128K | Updated |
| ProviderAbacus | Provider model IDgpt-5.3-chat-latest | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context400K | Updated |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
GPT-5.3 Runtime Performance
Provider-specific output speed and catalog latency for GPT-5.3 Chat. Runtime does not affect the capability score.
Sort by
Provider | Output Speed | Catalog Latency | Max Input | Max Output | Updated |
|---|
| ProviderOpenAI | Output Speed100 tok/s | Catalog Latency2 s | Max Input128K | Max Output16.4K | Updated |
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
GPT-5.3 Specifications
Technical details for the model's default version.
- Version
- GPT-5.3 Chat
- Released
- Mar 4, 2026
- Knowledge cutoff
- Aug 31, 2025
- Parameters
- N/A
- Context window
- 128K
- Max output
- 16.4K
- Inputs
- image, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
GPT-5.3 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionGPT-5.3 Chat | Released | LLMBoard39.7 | ParametersN/A | Context128K | Max output16.4K | Open weightsNo | LicenseProprietary |
GPT-5.3 vs nearby models
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What is GPT-5.3?
Key information about GPT-5.3 and its available data.
3 Chat is the instant model used in ChatGPT. It features high intelligence with medium speed, supporting text and image inputs with a 128k context window. 00/1M output tokens.
Data as of 2026-08-17.
FAQ
Common questions about GPT-5.3.
When was GPT-5.3 released?
GPT-5.3's default version was released on Mar 4, 2026.
How much does GPT-5.3 cost?
GPT-5.3's official API price is $1.75 per million input tokens and $14 per million output tokens via OpenAI. The lowest tracked third-party offer starts at $1.75 input and $14 output via OrcaRouter.
Who created GPT-5.3?
GPT-5.3 was created by OpenAI.
What is the context window for GPT-5.3?
The default version has a 128K token context window.
Is GPT-5.3 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer GPT-5.3?
6 provider offerings are linked to the default version.
What models should I compare GPT-5.3 with?
Nearby ranked alternatives include Qwen3 Next 80B A3B Thinking, Qwen3 Max, Qwen3 VL 32B Thinking.