GPT-5.3 Chat
OpenAIGPTProprietary
Description
GPT-5.3 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. It supports streaming, function calling, and structured outputs, priced at $1.75/1M input and $14.00/1M output tokens.
Release Date
2026-03-04
Parameters
—
Context Length
128K
Modalities
image, text
Capability Radar
40
general
0
coding
28
reasoning
34
scienceest.
20
agents
70
multimodal
Science is estimated from LLM Stats science scores or reasoning when no dedicated science benchmarks are available.
Rankings
No ranking data available
Benchmark Scores (LLM Stats)
(LLM Stats (zeroeval))Healthcare
HealthBench
54.1%SR
HealthBench Hard
25.9%SR
AA Evaluation Indices
(Artificial Analysis)No AA evaluation data available
LLM Stats Category Scores
(LLM Stats (zeroeval))General40
Healthcare40
Pricing
Input Price$0 / 1M tokens
Output Price$0.00001 / 1M tokens
Blended Price (3:1)$0 / 1M tokens
Cache Read Price$0.175 / 1M tokens
Speed
No speed data available
Provider Price Ranking
Provider Price Ranking
2 providers
Cheapest: OpenAIMost Expensive: Abacus
ProviderInputOutput
1OpenAIPRIMARY
$0
$0.00001
2Abacus
$1.75
$14
Compare pricing across different API providers for this model.