OpenAI model product
GPT-5.3
3 is an OpenAI language model used in ChatGPT that accepts text and image inputs with a 128k context window.
Updated Oct 23, 2026. Default version: GPT-5.3 Chat
LLMBoard Score40.6GPT-5.3 Chat
Coverage20%2 benchmark families
Context window128KTokens
Official input priceN/AOfficial price unavailable
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 | Score25.90% | Rank07 | Participants11 | Percentile40.00% | EvidenceC | Evaluated |
| BenchmarkHealthBench | Score54.10% | Rank11 | Participants14 | Percentile23.08% | EvidenceC | Evaluated |
| BenchmarkLM Arena Text Style Control | Score1,449.91 rating | Rank56 | Participants218 | Percentile74.65% | EvidenceA | Evaluated |
| BenchmarkLM Arena Vision Style Control | Score1,225.84 rating | Rank60 | Participants113 | Percentile47.32% | EvidenceA | Evaluated |
| BenchmarkLM Arena Vision | Score1,232.19 rating | Rank62 | Participants113 | Percentile45.54% | EvidenceA | Evaluated |
| BenchmarkLM Arena Text Factuality | Score1,421.62 rating | Rank97 | Participants131 | Percentile26.15% | EvidenceA | Evaluated |
| BenchmarkLM Arena Text | Score1,403.22 rating | Rank111 | Participants218 | Percentile49.31% | EvidenceA | 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 | Categorycreative writing | Rank11 | Rating / score1,239.48 | Votes1,518 | ObservationsN/A | Result date |
| Arenavision style control | Categorycreative writing | Rank12 | Rating / score1,231.82 | Votes1,518 | ObservationsN/A | Result date |
| Arenavision style control | Categorycaptioning | Rank15 | Rating / score1,194.22 | Votes375 | ObservationsN/A | Result date |
| Arenavision | Categorycaptioning | Rank18 | Rating / score1,211.57 | Votes375 | ObservationsN/A | Result date |
| Arenavision | Categoryentity recognition | Rank25 | Rating / score1,219.08 | Votes377 | ObservationsN/A | Result date |
| Arenavision style control | Categoryentity recognition | Rank27 | Rating / score1,190.37 | Votes377 | ObservationsN/A | Result date |
| Arenatext style control | Categorypolish | Rank29 | Rating / score1,474.31 | Votes745 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry medicine and healthcare | Rank38 | Rating / score1,481.68 | Votes2,578 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry business and management and financial operations | Rank44 | Rating / score1,459.80 | Votes6,818 | ObservationsN/A | Result date |
| Arenatext style control | Categorymulti turn | Rank45 | Rating / score1,466.99 | Votes6,453 | ObservationsN/A | Result date |
| Arenatext style control | Categoryrussian | Rank45 | Rating / score1,457.28 | Votes4,107 | ObservationsN/A | Result date |
| Arenavision | Categoryhomework | Rank45 | Rating / score1,278.46 | Votes1,325 | ObservationsN/A | Result date |
| Arenatext style control | Categoryjapanese | Rank46 | Rating / score1,429.25 | Votes524 | ObservationsN/A | Result date |
| Arenavision style control | Categoryhomework | Rank46 | Rating / score1,274.17 | Votes1,325 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry legal and government | Rank48 | Rating / score1,466.73 | Votes2,650 | ObservationsN/A | Result date |
| Arenatext style control | Categorynon english | Rank49 | Rating / score1,443.63 | Votes19,243 | ObservationsN/A | Result date |
| Arenatext style control | Categorykorean | Rank50 | Rating / score1,416.54 | Votes550 | ObservationsN/A | Result date |
| Arenatext style control | Categorychinese | Rank51 | Rating / score1,496.57 | Votes2,281 | ObservationsN/A | Result date |
| Arenatext | Categoryjapanese | Rank52 | Rating / score1,408.79 | Votes524 | ObservationsN/A | Result date |
| Arenavision | Categoryhumor | Rank54 | Rating / score1,218.74 | Votes1,448 | ObservationsN/A | Result date |
| Arenavision style control | Categoryhumor | Rank54 | Rating / score1,198.99 | Votes1,448 | ObservationsN/A | Result date |
| Arenavision style control | Categorychinese | Rank55 | Rating / score1,263.74 | Votes2,052 | ObservationsN/A | Result date |
| Arenatext style control | Categoryexclude ties | Rank56 | Rating / score1,453.41 | Votes26,359 | ObservationsN/A | Result date |
| Arenatext style control | Categorygerman | Rank56 | Rating / score1,450.28 | Votes523 | ObservationsN/A | Result date |
| Arenatext style control | Categoryoverall | Rank56 | Rating / score1,449.91 | Votes34,343 | ObservationsN/A | Result date |
| Arenavision | Categorychinese | Rank56 | Rating / score1,267.38 | Votes2,052 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryindustry business and management and financial operations | Rank57 | Rating / score1,451.45 | Votes755 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry software and it services | Rank57 | Rating / score1,488.26 | Votes13,371 | ObservationsN/A | Result date |
| Arenavision style control | Categorydiagram | Rank57 | Rating / score1,259.35 | Votes2,522 | ObservationsN/A | Result date |
| Arenavision style control | Categoryocr | Rank57 | Rating / score1,245.87 | Votes10,674 | ObservationsN/A | Result date |
GPT-5.3 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- From $1.75 input, $14 output per 1M via Merge Gateway
- Tracked offerings
- 5
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderMerge 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 |
| Provider302.AI | Provider model IDgpt-5.3-chat-latest | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context128K | Updated |
| ProviderOpper | Provider model IDgpt-5.3-chat-latest | Regionglobal | Input / 1M$1.75 | Output / 1M$14 | Context128K | 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 Speed100.00 tok/s | Catalog Latency2.00 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 | LLMBoard40.59 | ParametersN/A | Context128K | Max output16.4K | Open weightsNo | LicenseProprietary |
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What is GPT-5.3?
Key information about GPT-5.3 and its available data.
3 Chat is OpenAI's instant model used in ChatGPT, with medium speed and support for streaming, function calling, and structured outputs.
Data as of 2026-10-22.
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?
No official standard PAYG price is currently available for GPT-5.3. The lowest tracked third-party offer starts at $1.75 input and $14 output via Merge Gateway.
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?
5 provider offerings are linked to the default version.