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Gemini 3.5 Flash-Lite costs $0.30 per million input tokens and $2.50 per million output tokens. A typical chat turn comes to $0.0024, or about $73.00 a month at 1,000 requests a day.
Google bills the Gemini 3.5 Flash-Lite API by the token, and input and output are priced separately: $0.30 for every million tokens you send and $2.50 for every million it writes back. On a chat turn with 3,000 tokens of history and a 600-token answer, the answer is 63% of the cost — so on this model, shorter replies save more than a shorter prompt.
In this calculator Gemini 3.5 Flash-Lite is in the low-cost price tier. At 1,000 chat turns a day, it costs $73.00 a month; the other low-cost models listed here cost: DeepSeek V4 Flash ($32.12), GPT-5.6 Luna ($40.15), Claude Haiku 4.5 ($182.50). Prices are from the providers’ own price lists, checked on September 9, 2026. The calculator below opens with Gemini 3.5 Flash-Lite and that chat turn filled in — change the tokens and the volume to your own.
What ChatGPT, Claude, Gemini and Other Models Really Cost
Total cost
One request to GPT-5.6 Terra
Input tokens
150
$0.000300
Output tokens
500
$0.006000
If you keep this up
What drives your monthly bill
What you send
$0.18255%
What it writes back
$3.6595%
The AI's answers are 95% of your bill. Asking for shorter answers is usually the fastest way to spend less.
100 requests
$0.63
1,000 requests
$6.30
10,000 requests
$63.00
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List prices as of September 9, 2026, without prompt caching or batch discounts. A month is 365 ÷ 12 days at 1,000 requests a day.
| Workload | Tokens in / out | Per request | Per 1,000 requests | Per month |
|---|---|---|---|---|
| Short question | 150 / 500 | $0.001295 | $1.30 | $39.39 |
| Chat turn with history | 3,000 / 600 | $0.0024 | $2.40 | $73.00 |
| Coding task | 4,000 / 1,200 | $0.0042 | $4.20 | $127.75 |
| Document summary | 6,000 / 800 | $0.0038 | $3.80 | $115.58 |
Models