# Gemini 2.5 Flash-Lite

Gemini 2.5 Flash-Lite is a text generation model from Google, available through the Impossibl API. Its published context window is 1,000,000 tokens. The advertised input rate is $0.10 per million input tokens. The advertised output rate is $0.40 per million output tokens.

- Model identifier: ` google/gemini-2.5-flash-lite `
- Creator: Google
- Model type: Text generation
- Canonical model page: [Gemini 2.5 Flash-Lite](<https://impossibl.com/google/gemini-2.5-flash-lite>)
- API availability: Listed as serving through Impossibl.
- Creator release date: 2025-07-22

## Capabilities and limits

- Context window: 1,000,000 tokens
- Maximum output tokens: Not published in the public catalog; this is separate from the context window.
- Inputs: text, image, audio, video
- Outputs: text
- Tool calling: Not published

## API access

Use ` google/gemini-2.5-flash-lite ` as the model identifier through the Impossibl API.

Published API endpoints:

- ` /v1/chat/completions `

[API quickstart](<https://impossibl.com/docs/agent-quickstart>) · [Models and billing documentation](<https://impossibl.com/docs/models>)

## Published API prices

All rates are in USD. An unpublished rate is unknown, not zero. Workspace-specific pricing, taxes, balance-purchase fees, billing adjustments, and tool charges can affect the amount paid.

| Usage | Published base rate | Billing unit |
| --- | --- | --- |
| Input | $0.10 | per million input tokens |
| Output | $0.40 | per million output tokens |
| Cache read | $0.01 | per million cached input tokens |
| Cache write (default retention) | Not published | per million tokens |
| Cache write (one-hour retention) | Not published | per million tokens |
| Audio input | $0.30 | per million audio input tokens |

## Independent benchmarks

Source: [Artificial Analysis](<https://artificialanalysis.ai/>). Last checked: 2026-09-11T11:21:18.106Z.
Configurations are evaluated separately. API scores retain their original units. Unmeasured scores are omitted.

### Gemini 2.5 Flash-Lite (Non-reasoning)

Source: [Evaluation source](<https://artificialanalysis.ai/models/gemini-2-5-flash-lite>)

| Benchmark | Score |
| --- | --- |
| Intelligence Index | 6.67 |
| Omniscience Index | -58.78 |
| GPQA | 47.37% |
| Humanity’s Last Exam | 3.66% |
| CritPt | 0.00% |
| Terminal-Bench Hard | 2.27% |
| AA-LCR | 32.00% |
| MMMU-Pro | 53.99% |
| IFBench | 31.50% |
| Tau2 | 19.01% |
| LiveCodeBench | 40.00% |
| AIME 2025 | 35.33% |
| intelligence index (API) | 6.7 |

### Gemini 2.5 Flash-Lite (Reasoning)

Source: [Evaluation source](<https://artificialanalysis.ai/models/gemini-2-5-flash-lite-reasoning>)

| Benchmark | Score |
| --- | --- |
| Intelligence Index | 8.55 |
| Omniscience Index | -45.62 |
| GPQA | 62.53% |
| Humanity’s Last Exam | 6.81% |
| CritPt | 0.00% |
| Terminal-Bench Hard | 4.55% |
| AA-LCR | 55.67% |
| Multilingual LCR | 2.22% |
| MMMU-Pro | 58.21% |
| IFBench | 49.86% |
| Tau2 | 18.42% |
| LiveCodeBench | 59.26% |
| AIME 2025 | 53.33% |
| intelligence index (API) | 8.5 |

Full benchmark data and breakdowns: [Complete benchmark snapshot](<https://api.impossibl.com/v1/models/google/gemini-2.5-flash-lite/benchmarks>).


## Availability and retirement

The model is listed as serving. No retirement is announced in the current public catalog.

## Frequently asked questions

### What is Gemini 2.5 Flash-Lite?

Gemini 2.5 Flash-Lite is a text-generation model from Google, available through the Impossibl API.

### How much does Gemini 2.5 Flash-Lite cost?

Gemini 2.5 Flash-Lite costs $0.10 per million input tokens and $0.40 per million output tokens through the Impossibl API. Cache reads cost $0.01 per million tokens. Audio input costs $0.30 per million audio input tokens. All rates are in USD.

### What is the context length of Gemini 2.5 Flash-Lite?

Gemini 2.5 Flash-Lite has a 1,000,000-token context window through the Impossibl API.

### What inputs and outputs does Gemini 2.5 Flash-Lite support?

Gemini 2.5 Flash-Lite accepts text, image, audio, and video as input. Gemini 2.5 Flash-Lite returns text.

### How do I use Gemini 2.5 Flash-Lite through an API?

Gemini 2.5 Flash-Lite is available through the Impossibl API. Use google/gemini-2.5-flash-lite as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

### When was Gemini 2.5 Flash-Lite released?

Google released Gemini 2.5 Flash-Lite on July 22, 2025.

Sources: [Creator release announcement](<https://ai.google.dev/gemini-api/docs/changelog>)

## Sources and related links

Prices, limits, capabilities, endpoints, and availability come from the public Impossibl catalog. Creator documentation supplies descriptions and release dates where available; it does not override the published API offering.

- [Public Impossibl model catalog](<https://api.impossibl.com/v1/models>)
- [Full model directory as JSON](<https://impossibl.com/models.json>)
- [Gemini 2.5 Flash-Lite: model details and pricing](<https://impossibl.com/google/gemini-2.5-flash-lite>)
- [Model directory](<https://impossibl.com/models>)