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GPT-5.3 Chat (latest)

openai/gpt-5.3-chat-latest

Chat-tuned GPT model for conversational assistance, writing, and tool workflows

Source-linkedgptClosed weightsReleased 2026-03-03
Report data
Context window128K
Maximum output16.384K
Provider offers4
Knowledge cutoff2025-08-31
Capabilities

What this model supports

ReasoningNo
Tool callingYes
Structured outputYes
AttachmentsYes
Temperature controlYes
Open weightsNo
Creator
OpenAI
Family
gpt
Modalities
Image, Text
License
Not documented
Release date
2026-03-03
Model ID
openai/gpt-5.3-chat-latest
Market availability

Provider pricing

Report price →
Providers offering GPT-5.3 Chat (latest)
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
Merge Gatewayopenai/gpt-5.3-chat-latest128K$1.750$14.000$0.175· T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
OrcaRouteropenai/gpt-5.3-chat-latest128K$1.750$14.000$0.175· T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
LLM Gatewaygpt-5.3-chat-latest128K$1.750$14.000$0.175· T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
OpenAIgpt-5.3-chat-latest128K$1.750$14.000$0.175· T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Evidence

Published benchmark results

Insufficient benchmark coverage. ModelBench does not infer a score from price, context size, or model name.