GPT-5.3 Chat vs GPT Chat Latest
GPT-5.3 Chat is cheaper on output tokens, while GPT Chat Latest offers a larger context window. Choose GPT-5.3 Chat or GPT Chat Latest based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.3 Chat | GPT Chat Latest |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | $1.75 | $5.00 |
| Output / 1M tokens | $14.00 | $30.00 |
| Context window | 128K | 400K |
| Parameters | — | — |
| Open weights | — | — |
| Released | — | — |
| LMArena (Chatbot Arena) Elo score | 1389 | — |
FAQ
Is GPT-5.3 Chat or GPT Chat Latest cheaper?
GPT-5.3 Chat is cheaper on output tokens ($14.00 vs $30.00 per 1M).
Which has the larger context window, GPT-5.3 Chat or GPT Chat Latest?
GPT Chat Latest has the larger context window (400K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.