gpt-4o price up to 50% cut on 2024-08-06
On 2024-08-06, OpenAI changed the published API price of gpt-4o. The superseded price had stood for 85 days. This is the only recorded price change for this model in the index.
Every metered token direction on gpt-4o got cheaper that day. A cut is the direction people notice least, because a lower bill rarely prompts anyone to check what changed.
What changed
| Per 1M tokens | Before | After | Change |
|---|---|---|---|
| Input | $5.00 | $2.50 | -50% |
| Output | $15.00 | $10.00 | -33.3% |
What it meant in practice
On a reference workload of 50M input and 5M output tokens a month, this change moved the bill from $325.00 to $175.00 a month, a difference of $150.00. The workload is a fixed reference used on every event page so the figures are comparable between them, not a measurement of anyone's usage.
Your recorded history should not change when prices do
A cost tracker carrying a single current-price table would reprice every gpt-4o session you ran before 2024-08-06 at the new rate, silently restating months you already paid for. See what this change does to a real session, and why dated windows are the fix.
Provenance
Every value here carries a first-party source, and superseded prices are kept rather than overwritten. Windows before the index began are reconstructed from web archives and labelled as archived rather than claimed as first-party.
| Window | Source |
|---|---|
| Input, 2024-05-13 to 2024-08-06 | https://web.archive.org/web/20240524210913/https://openai.com/pricing/ |
| Input, from 2024-08-06 | https://web.archive.org/web/20240812003130/https://openai.com/pricing/ |
| Output, 2024-05-13 to 2024-08-06 | https://web.archive.org/web/20240524210913/https://openai.com/pricing/ |
| Output, from 2024-08-06 | https://web.archive.org/web/20240812003130/https://openai.com/pricing/ |
Related
Derived from the AI Price Index, last updated 2026-07-25. Licensed CC BY 4.0: reuse this with credit to the dataset page.