Gemini 2.5 Flash
Fast / cheapLast verified: June 2026· Google Gemini 2.5 Flash pricing
Low-latency long-context model. Confirm current pricing with Google.
- Input / 1M
- $0.30
- Output / 1M
- $2.50
- Context
- 1M tokens
- Provider
Pricing verified June 2026. Prices change frequently. Always confirm against the provider’s official pricing page before relying on these figures for budgeting. Official pricing →
When to choose Gemini 2.5 Flash
A 1M-token window at $0.30 per million input is the cheapest large context in this table, and that is the reason to reach for it. The catch sits on the other side of the meter: output runs at $2.50, more than eight times input and the widest spread here, so it rewards read-heavy work — summarising, extracting, answering from a long document — and punishes long generation. On the Google stack it is the obvious high-volume tier. Check the output side of your token mix before assuming the cheap input figure is the price you will pay.
Gemini 2.5 Flash sits close enough to Gemini 2.5 Pro on price that the two are usually decided together. That comparison is written once, on the models table, rather than argued twice from opposite sides.
What Gemini 2.5 Flash costs in practice
A 50M/10M month is $40, of which $15 is input and $25 is output — on five times as many input tokens. That inversion is the whole character of the row. Filling the 1M window costs 30 cents of input, the cheapest large context in this table, so reading is close to free and writing is not. Summarising, extraction, classification and answering from long documents all sit well here. Long-form generation belongs somewhere with a flatter spread, or the token mix quietly undoes the saving.
| Scenario | Input / mo | Output / mo | Est. cost / mo |
|---|---|---|---|
| Prototype | 2M | 0.5M | $2 |
| Growing product | 50M | 10M | $40 |
| At scale | 500M | 100M | $400 |
Plug in your own numbers with the cost calculator.
Where Gemini 2.5 Flash fits in a routing setup
This is the volume tier on the Google stack, so the routing decisions here are mostly about what to send up rather than down: the reference month is $40 against $163 on Gemini 2.5 Pro. Across vendors the closest equivalent is GPT-4.1 mini, another 1M-window row at $36 for the same volumes, while Claude Haiku 4.5 at $100 is the nearest volume tier that keeps the work on Anthropic. Which of the three wins on your traffic is an eval question, not a pricing one.
Cheaper alternatives to Gemini 2.5 Flash
The models immediately below Gemini 2.5 Flash on blended cost, nearest first. A swap only pays if quality holds on the routes you move — see the LLM cost optimization playbook for how to prove that before you move them.
Frequently asked questions
How much does Gemini 2.5 Flash cost?
Gemini 2.5 Flash bills $0.30 per million input tokens and $2.50 per million output tokens — $0.85 per million blended at a three-to-one input:output split. A workload of 50M input and 10M output tokens per month works out at about $40. Confirm current pricing with the provider.
What is Gemini 2.5 Flash's context window?
Gemini 2.5 Flash has a 1M-token context window. One request that fills the whole window costs about $0.30 at the input rate, before the reply is billed.
Where does Gemini 2.5 Flash sit on price?
At $0.85 per million blended — three input tokens for every output token — Gemini 2.5 Flash is dearer than 4 of the 19 models tracked here and cheaper than 14. Output bills at 8.3x the input rate, and the nearest cheaper model on this table is GPT-4.1 mini at $0.70 blended.
Related concepts: context window, model routing, prompt caching, evals.