Model Comparison → OpenAI

GPT-4.5

GPT-4.5 by OpenAI. Input: $75.00/M tokens · Output: $150.00/M tokens · 128K context window.

✓ Vision✓ Tool use✓ Prompt caching✗ ReasoningSlow
Pricing (verified 2026-08-19)
TypePrice / 1M tokensNotes
Input$75.00Per 1M input tokens
Output$150.00Per 1M output tokens
Cache read$37.50Cached prefix read-back
Source: OpenAI official pricing page · Last verified 2026-08-19
Context Window
128K tokens
≈ 96K words · 0 pages of text

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Prompt Cost Calculator
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Prompt Caching Calculator
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Other OpenAI models

GPT-5.4 — $2.50/MGPT-5 mini — $0.25/MGPT-4o — $2.50/M

Pricing verified 2026-08-19 from OpenAI official pricing. All prices in USD per 1M tokens. See methodology and price changelog.