OpenAI

GPT-5.3 Chat (latest)

Type
language model
Context
128K tokens
Max output
16K
Released
3 March 2026
Knowledge cutoff
August 2025
API string
gpt-5.3-chat-latest

Prices by provider

Provider Input, $ per 1M Output, $ per 1M In our data since
Abacus.AI $1.75 $14 31 Jul 2026
LLM Gateway $1.75 $14 31 Jul 2026
Merge Gateway $1.75 $14 31 Jul 2026
OpenAI $1.75 $14 31 Jul 2026
OrcaRouter $1.75 $14 31 Jul 2026

Only the base tier and only per-token prices are shown. Batch, discounted and cached rates, as well as prices per image or per second of video, do not go into this table: they cannot stand in the same column as a price per million tokens.

The date in the last column is the day this price first entered our collection. The price may well be older: before that day we simply were not recording it. It has not changed since — otherwise a new row with a new date would stand in its place.

Measurement results

Task set Result Run conditions Measured by
Arena Score, multi-turn dialogue 1,412.76 1,405–1,421
Arena Score, programming 1,406.23 1,399–1,413
Arena Score in Russian 1,401.88 1,391–1,412
Arena Score in French 1,398.96 1,378–1,420
Arena Score, hard prompts 1,397.27 1,392–1,403
Arena Score, expert questions 1,396.44 1,385–1,408
Arena Score, long queries 1,394.85 1,388–1,401
Arena Score in English 1,389.83 1,384–1,396
Arena Score, overall 1,387.64 1,383–1,392
Arena Score, mathematics 1,384.77 1,371–1,398
Arena Score, instruction following 1,377.09 1,370–1,384
Arena Score in Spanish 1,372.21 1,353–1,391
Arena Score, creative writing 1,355.23 1,346–1,364