OpenAI

GPT 4.5 Preview

Type
language model
Context
128K tokens
Max output
16K
API string
azure/gpt-4.5-preview

Prices by provider

Provider Input, $ per 1M Output, $ per 1M In our data since
Microsoft Foundry $75 $150 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 1,443.92 1,430–1,457 — —
Arena Score in English 1,419.49 1,412–1,427 — —
Arena Score in Russian 1,418.24 1,403–1,434 — —
Arena Score in French 1,418.01 1,362–1,474 — —
Arena Score, overall 1,417.47 1,412–1,423 — —
Arena Score, mathematics 1,411.89 1,397–1,427 — —
Arena Score, long queries 1,406 1,392–1,420 — —
Arena Score, instruction following 1,404.35 1,396–1,413 — —
Arena Score, hard prompts 1,403.65 1,394–1,414 — —
Arena Score, programming 1,397.05 1,384–1,410 — —
Arena Score, creative writing 1,394.29 1,382–1,406 — —
Arena Score, expert questions 1,393.91 1,371–1,417 — —
Arena Score, working with images 1,195.13 1,183–1,207 — —
MATH, difficulty level five 78.63 % · with a tuned harness Epoch evaluations
Creative writing (Lech Mazur’s evaluation) 75.6 % — lechmazur/writing Github repository
Fiction.LiveBench — holding a long context 63.9 % — Fiction.live leaderboard
GPQA Diamond — graduate-level questions 58.25 % · with a tuned harness Epoch evaluations
Aider Polyglot — code edits in six languages 44.9 % · with a tuned harness Aider LLM Leaderboards
WeirdML — unusual machine learning tasks 39.37 % — WeirdML Leaderboard
Mock AIME 2024–2025 — olympiad problems 37.72 % · with a tuned harness Epoch evaluations
SimpleBench — trick questions 21.4 % — SimpleBench Leaderboard
Cybench — cybersecurity tasks 17.5 % · with a tuned harness Cybench leaderboard
ARC-AGI — generalising to unseen patterns 10.3 % · with a tuned harness ARC Prize Leaderboard
ARC-AGI-2 0.8 % — —
Humanity’s Last Exam — expert-level questions 0.67 % — —