GPT-5.3 Chat
OPENAI Developer Architecture Profile
Intelligence (ELO)1420Chatbot Arena Verified
Max Context128,000Tokens
API Cost / 1M$15.75Blended Prompt + Completion
Model Capabilities
- Coding & Logic
- Fictional
- Top Tier
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly reduces unnecessary refusals, caveats, and overly cautious phrasing that can interrupt conversational flow.
Granular Pricing Matrix
Input Tokens (Prompt)$1.75 / 1M
Output Tokens (Completion)$14.00 / 1M
Pricing data via OpenRouter. Sync: 3/16/2026
Evaluate Competitors
VS Engine MatchupGPT-5.3 Chat vs OpenAI: GPT-5.3-CodexVS Engine MatchupGPT-5.3 Chat vs Google: Gemini 3.1 Pro PreviewVS Engine MatchupGPT-5.3 Chat vs OpenAI: GPT-5.4 ProVS Engine MatchupGPT-5.3 Chat vs OpenAI: GPT-5.4VS Engine MatchupGPT-5.3 Chat vs OpenAI: GPT-5.2 ChatVS Engine MatchupGPT-5.3 Chat vs Anthropic: Claude Opus 4.5