API costs

OpenAI API pricing calculator

Estimate GPT API costs with separate input, output, cache-read and cache-write rates.

Reviewed September 11, 2026 · Free to use · Calculations run in your browser

Your usage

ProviderModel

Context pricing bandChoose the applicable band from the provider pricing page.Input tokens per requestOutput tokens per requestInclude billed reasoning / thinking tokens.Requests in your estimate

Caching, rates & additional costs

Cache reads and writes are portions of total input, not extra tokens. Leave both at zero for uncached usage.

Cache-read tokens per requestCache-write tokens per requestInput rate ($ / 1M tokens)Output rate ($ / 1M tokens)Cache-read rate ($ / 1M)Cache-write rate ($ / 1M)Request fee ($ / 1,000 requests)Other charges for this estimate ($)

Edit rates for Batch, different cache durations, regional processing or your own contract. Edited rates become a custom estimate. Other charges can include search tools, cache storage, images and audio.

How this calculator works

Uncached input, cache reads, cache writes and output are priced separately, divided by one million and multiplied by the request count. The request fee and any additional costs are then added. Use the same period for requests and additional costs.

Presets are a reviewed selection, not a complete model catalog or a live billing feed. Standard text inference rates are shown unless the model label says otherwise. Use your provider's measured token counts: the same text can tokenize differently across models.

OpenAI presets include the published short- and long-context bands, with 30-minute cache-write pricing; regional uplifts and Fast mode are excluded.

Sources & review date

Checked September 11, 2026. Providers can change rates, model availability and specifications. Open the source for the selected preset before budgeting or buying hardware.

OpenAI official pricing ↗

Your usage

How this calculator works

Sources & review date

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