LLM API cost calculator

One workload, every provider. Pick a model to see its line items, then read the table below to see what the same tokens cost elsewhere.

Model Requests per day Input tokens per request Output tokens per request Cache read tokens per request Cache write tokens per request (5 minute) Batch API

Gemini 2.5 Pro at 1,000 requests per day costs $0.009750 per request, $9.75 per day, $292.50 per month and $3,558.75 per year.

Prices effective 2026-09-06Verified 2026-09-0530 day month, 365 day year

Line	Quantity per request	Unit price	Per request	Per month
input	3,000	$1.25 per 1m tokens	$0.003750	$112.50
output	600	$10.00 per 1m tokens	$0.006000	$180.00

Try a preset:

Same workload on other models

Model	Provider	Per request	Per month	Change from selected
GPT-5 nano	Azure OpenAI (Foundry Models)	$0.000390	$11.70	-$280.80
GPT-5 nano	OpenAI	$0.000390	$11.70	-$280.80
GPT-4.1 nano	Azure OpenAI (Foundry Models)	$0.000540	$16.20	-$276.30
Gemini 2.5 Flash-Lite	Google (Gemini API)	$0.000540	$16.20	-$276.30
GPT-4.1 nano	OpenAI	$0.000540	$16.20	-$276.30
GPT-4o mini	Azure OpenAI (Foundry Models)	$0.000810	$24.30	-$268.20

Full ranking on the comparison page. Want CI to fail when a change pushes the monthly figure past a limit? See budget contracts.

How the number is computed

Each token dimension is multiplied by its list price per 1M tokens in integer micro-dollars, then rounded half up once per line. No floating point.
Cache write tokens use the 5 minute TTL price. Cache read tokens use the cache read price. Both are in addition to uncached input tokens.
Batch API applies the model's published multiplier (50% on every current model) to every token line.
Month = 30 days, year = 365 days. Taxes, volume discounts and provider commitments are excluded.
Long-context tiers (Gemini above 200k input tokens) switch automatically when the input token count crosses the threshold.

Sources and verification

Anthropic: https://platform.claude.com/docs/en/about-claude/pricing
OpenAI: https://developers.openai.com/api/docs/pricing
Google (Gemini API): https://ai.google.dev/gemini-api/docs/pricing
Azure OpenAI (Foundry Models): https://azure.microsoft.com/en-us/pricing/details/cognitive-services/openai-service/

Every figure above was read from the official page or pricing API named here and last verified on 2026-09-05. Superseded prices stay in the dataset with an end date; nothing is overwritten. When a price on this page is older than 45 days a warning appears at the top. Raw data: /api/v1/pricing.json.