Gemini 3.5 Flash API pricing — what it really costs
Gemini 3.5 Flash (Google) costs $1.50 per 1M input tokens and $9 per 1M output tokens. Prices verified 2026-07-05; we track the price you are actually billed today, including promotional rates.
Price per 1M tokens
| Input | Output | Cached input |
|---|---|---|
| $1.50 | $9 | — |
Real monthly costs on Gemini 3.5 Flash
Three realistic workloads, computed from the prices above (cached share billed at the cache-read rate where the provider offers one):
Customer-support chatbot
$7.50/mo
2M input + 0.5M output tokens/month, 60% of input served from prompt cache
RAG / document Q&A
$39.00/mo
20M input + 1M output tokens/month, 70% cached (shared context)
Agentic coding assistant
$120/mo
50M input + 5M output tokens/month, 80% cached (long sessions)
Want exact numbers for your usage? Open the calculator — same verified prices, your token volumes.
Compare Gemini 3.5 Flash
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FAQ
How much does the Gemini 3.5 Flash API cost?
Gemini 3.5 Flash costs $1.50 per 1M input tokens and $9 per 1M output tokens. Pricing verified 2026-07-05.
What does a typical workload cost on Gemini 3.5 Flash?
Customer-support chatbot: about $7.50/month (2M input + 0.5M output tokens/month, 60% of input served from prompt cache). RAG / document Q&A: about $39.00/month (20M input + 1M output tokens/month, 70% cached (shared context)). Agentic coding assistant: about $120/month (50M input + 5M output tokens/month, 80% cached (long sessions))
Is Gemini 3.5 Flash expensive compared to other models?
Gemini 3.5 Flash ranks #7 of 15 models by blended price in our comparison. The cheapest tracked model is DeepSeek V4 Flash at $0.140/$0.280 per 1M tokens.