gemini-3.5-flash · Google
Proven 3.5 Flash generation at $1.50/$9.00 — still listed alongside its 3.6 successor.
Last checked Aug 16, 2026. Calculations use the listed base rates; provider-specific tiers, cache writes, batch pricing, and long-context rules may differ. Note: Context per model docs; pricing page lists rates only. Confirm the current rate at the official provider source.
Input
$1.50
per 1M tokens
Output
$9.00
per 1M tokens
Cached input
$0.15
per 1M tokens
Context window
1M
max output 65.5K
Gemini 3.5 Flash cost calculator
What Gemini 3.5 Flash costs per task
| Use case | Input tokens | Output tokens | Cost / request | Monthly @ 1K req/day |
|---|---|---|---|---|
| Customer support chatbot | 3,500 | 350 | $0.005093 | $152.775 |
| RAG / search-augmented answers | 8,000 | 500 | $0.0111 | $333.00 |
| AI coding assistant | 12,000 | 2,000 | $0.0263 | $788.40 |
| Document summarization | 25,000 | 600 | $0.0395 | $1,185.75 |
| Agentic workflow | 40,000 | 1,500 | $0.0384 | $1,152.00 |
| Content generation | 800 | 1,200 | $0.0117 | $350.28 |
| Data extraction & tagging | 2,000 | 250 | $0.00471 | $141.30 |
| Translation | 5,000 | 5,500 | $0.056 | $1,679.625 |
Assumes each use case's typical cacheable share of input. See full cost scenarios.
Compare with alternatives
| Model | Input /M | Output /M | Context | Chat request* |
|---|---|---|---|---|
| Gemini 3.5 Flash | $1.50 | $9.00 | 1M | $0.0105 |
| Gemini 3.6 Flashcompare | $1.50 | $7.50 | 1M | $0.0093 |
| GPT-5.4 | $2.50 | $15.00 | 1.1M | $0.0175 |
| Grok 4.5 | $2.00 | $6.00 | 500K | $0.0094 |
*4,000 in + 800 out tokens, 50% cached input where available.
Related calculations
FAQ
Gemini 3.5 Flash costs $1.50 per 1M input tokens and $9.00 per 1M output tokens, with cached input at $0.15 per 1M tokens. Verified Aug 16, 2026 against https://ai.google.dev/gemini-api/docs/pricing.
Gemini 3.5 Flash supports a 1,048,576-token context window with up to 65,536 output tokens per request, tokenized with Gemini SentencePiece (~262K vocab).
At $1.50/M input and $9.00/M output, Gemini 3.5 Flash sits below Gemini 3.6 Flash ($1.50/M in, $7.50/M out) — see the comparison table for full-workload differences.