OpenAI

GPT 5 Chat

Type
language model
Context
128K tokens
Max output
16K
Released
7 August 2025
Knowledge cutoff
September 2024
API string
openai/gpt-5-chat

Prices by provider

Provider Input, $ per 1M Output, $ per 1M In our data since
Poe $1.1 $9 31 Jul 2026
Kilo Code $1.25 $10 31 Jul 2026
Microsoft Foundry $1.25 $10 31 Jul 2026
OpenAI $1.25 $10 31 Jul 2026
OpenRouter $1.25 $10 31 Jul 2026
Requesty $1.25 $10 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 1,426.34 1,418–1,435 — —
Arena Score in French 1,412.24 1,382–1,442 — —
Arena Score, mathematics 1,408.99 1,395–1,423 — —
Arena Score, expert questions 1,407.22 1,392–1,423 — —
Arena Score in English 1,407.16 1,402–1,413 — —
Arena Score, hard prompts 1,405.12 1,400–1,411 — —
Arena Score in Russian 1,404.07 1,390–1,419 — —
Arena Score, overall 1,403.78 1,400–1,408 — —
Arena Score, long queries 1,400.31 1,393–1,408 — —
Arena Score, programming 1,400.27 1,392–1,408 — —
Arena Score in Spanish 1,387.59 1,366–1,410 — —
Arena Score, instruction following 1,383.8 1,377–1,391 — —
Arena Score, creative writing 1,367.89 1,358–1,377 — —
Arena Score, understanding diagrams 1,253.29 1,240–1,266 — —
Arena Score, text recognition in images 1,244.9 1,236–1,254 — —
Arena Score, working with images 1,231.63 1,225–1,239 — —