Gemini 3.7 Flash API Pricing
Gemini 3.7 Flash shipped on August 14, 2026 for complex coding, agentic workflows and reliable multi-step execution. Google relabelled it "our previous-generation Flash model" on September 2, 2026, when Gemini 3.8 Flash arrived on the identical rate card — so nothing about the price changed, only the position. It arrives on the same rate card as Gemini 3.6 Flash, which Google moved onto the same schedule the same day: $0.75/M input, $3.75/M output and $0.075/M cached input through December 31, 2026, then standard pricing of $1.50 / $7.50 / $0.15 from January 1, 2027. Because the two are priced identically, the choice between them is about capability, not cost.
Run the numbers.
Live calculator pre-loaded with the Gemini 3.7 Flash rates in effect today — $0.75 input, $3.75 output, $0.075 cached. All three double on January 1, 2027, so a workload sized here costs twice as much from that date. Gemini 3.6 Flash prices identically, so switching between the two changes capability rather than the bill.
Real-world presets.
Codebase-scale migration
Reading 100-page contracts
Ticket triage
Research planning turn
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 3.7 Flash Current | $0.75 cache $0.075 | $3.75 | $0.481 previous-generation Flash | 1M | Coding, agents, multi-step execution |
| Gemini 3.6 Flash | $0.75 cache $0.075 | $3.75 | $0.481 same price, prior gen | 1M | Previous-generation Flash |
| Gemini 3.5 Flash | $1.50 cache $0.15 | $9.00 | $1.08 pricier output | 1M | The model 3.6 replaces |
| Gemini 3.1 Pro Preview | $2.00 cache $0.20 | $12.00 | $1.44 pricier | 1M | Google's frontier reasoning tier |
| Gemini 3.5 Flash-Lite | $0.30 cache $0.03 | $2.50 | $0.272 cheaper | 1M | High-volume, simpler tasks |
| Gemini 3.1 Flash-Lite | $0.25 cache $0.025 | $1.50 | $0.18 cheapest Gemini | 1M | Cheapest per-token Gemini tier |
| Claude Haiku 4.5 | $1.00 cache $0.10 | $5.00 | $0.682 cheaper | 200K | Anthropic's fast tier |
| GPT-5.4 mini | $0.75 cache $0.075 | $4.50 | $0.541 cheaper | 400K | OpenAI's mid tier |
| DeepSeek V4 Flash | $0.44 cache $0.014 | $1.32 | $0.189 cheaper | 1M | Budget reasoning and coding |
Frequently asked.
Gemini 3.7 Flash pricing questions, with the dated schedule kept separate from the rate in effect today.
Q · 01 How much does Gemini 3.7 Flash cost? +
gemini-3.7-flash at $0.75/M input, $3.75/M output including thinking tokens, and $0.075/M cached input. Those rates run through December 31, 2026; from January 1, 2027 the standard pricing is $1.50 / $7.50 / $0.15.Q · 02 Is Gemini 3.7 Flash more expensive than 3.6 Flash? +
$0.48/M effective, so the decision between them is a capability decision.Q · 03 What does the January 1, 2027 change mean for my bill? +
$0.50 to $1.00 per 1M tokens per hour. We re-verify this page against Google's pricing page and will record what actually happens on the date rather than assuming the schedule holds.Q · 04 What can Gemini 3.7 Flash take as input? +
1,048,576-token input limit and a 65,536-token output limit, with context caching supported.Q · 05 Are thinking tokens billed separately? +
$3.75/M as visible output. There is no separate reasoning rate to budget for, but heavy thinking still raises the output token count.