Gemini 1.5 Flash API Pricing
Google's retired Gemini 1.5 Flash row, kept for historical invoice reconciliation and price-evolution comparisons: $0.075/M input, $0.3/M output, with no cache discount listed. Kept as an archive page.
Run the numbers.
Calculator pre-loaded with Gemini 1.5 Flash archive rates. Archive price uses the last-published project snapshot: $0.075/M input and $0.30/M output, with a higher >128K prompt tier at $0.15/M input and $0.60/M output.
Real-world presets.
Invoice replay
Legacy benchmark batch
Migration cost comparison
Archived RAG answer
Price history.
Paste text. See tokens. See cost.
This is a chars-per-token approximation, not a real tokenizer. Actual tokens vary by language, code density, and tool-call overhead — counts are typically ±10–20% off for English prose, more for code or non-Latin scripts. For exact billing, use the vendor's official tokenizer.
| Model | Input /M | Output /M | Effective blended | Context | Best for |
|---|---|---|---|---|---|
| Gemini 1.5 Flash Current | $0.07 | $0.30 | $0.09 archive 92/8 | 1M | Archive cheap Gemini invoices |
| Gemini 3.1 Pro Preview | $2.00 cache $0.20 | $12.00 | $1.44 current replacement | 1M | Current Gemini Pro preview |
| Gemini 3 Flash Preview | $0.50 cache $0.05 | $3.00 | $0.36 newer flash preview | 1M | Current Gemini 3 Flash |
| Gemini 3.1 Flash-Lite | $0.25 cache $0.03 | $1.50 | $0.18 new light tier | 1M | Current high-volume Gemini |
| Gemini 2.5 Pro | $1.25 cache $0.13 | $10.00 | $1.10 stable pro | 2M | Stable Pro replacement |
| Gemini 2.5 Flash | $0.30 cache $0.03 | $2.50 | $0.27 stable flash | 1M | Stable Flash replacement |
| Gemini 2.5 Flash-Lite | $0.10 cache $0.01 | $0.40 | $0.06 stable lite | 1M | Stable Lite replacement |
| GPT-5.4 mini | $0.75 cache $0.07 | $4.50 | $0.54 OpenAI mini | 400K | OpenAI mini alternative |
Frequently asked.
Gemini 1.5 Flash pricing questions, with archive/deprecation status separated from token math.
Q · 01 What is Gemini 1.5 Flash's API price? +
$0.075/M input and $0.3/M output. The archived higher prompt tier is $0.15/M input and $0.6/M output.Q · 02 Is Gemini 1.5 Flash still available? +
gemini-1-5-flash was shut down on 2025-09-29. Use gemini-2-5-flash for current traffic.Q · 03 Does prompt caching apply? +
$0.075/M rather than inventing a discount.Q · 04 How should I use this page? +
Q · 05 What about Batch and Flex pricing? +
Q · 06 How accurate is the tokenizer estimate? +
4.0 characters per token as a Gemini planning estimate. Exact billing can differ by language, media inputs, tool calls, and how Google tokenizes multimodal content.