Gemini 2.5 Flash
API model name: gemini-2.5-flash
Gemini 2.5 Flash is Google's chat model, served on the Api.Airforce unified API. It has a 1M-token context window. Beyond text, it accepts image, audio, video, document as input. Capabilities include Vision, Tool calling, Reasoning, Documents, Prompt caching. It is priced at $0.40 per million input tokens and $2.50 per million output tokens. That is below the provider's $0.75 official input rate. Knowledge cutoff: 2025-01. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.
Pricing
Api.Airforce price vs. the provider's official rate.
Specifications
- Provider
- Type
- chat model
- Context window
- 1M tokens
- Max output
- 66K tokens
- Knowledge cutoff
- 2025-01
- Input
- text, image, audio, video, document
- Output
- text
- Prompt caching
- Supported
Capabilities
Benchmarks
Independent evaluations and measured speed from Artificial Analysis.
Source: Benchmark data by Artificial Analysis (artificialanalysis.ai)
What is Gemini 2.5 Flash used for?
- Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
- Image understanding — analyze photos, screenshots, charts and scanned documents.
- Agents & automation — function calling and tool use for multi-step workflows.
- Complex reasoning — math, coding and step-by-step problem solving.
- Document analysis — summarize and answer questions across long files.
- Long-context tasks — process entire documents or codebases in a single prompt.
- Real-time experiences — stream tokens for responsive chat and apps.
Gemini 2.5 Flash vs. similar models
| Model | Intelligence | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|
| Gemini 2.5 Flash | 20.6 | 1M | $0.40 | $2.50 |
| Gemini 2.5 Pro | 34.6 | 2M | $0.70 | $2.20 |
| Gemini 3 Flash | 35.0 | 1M | $0.40 | $2.40 |
| Gemini 3 Pro | 48.4 | 2M | $0.90 | $2.75 |
Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.
Related models
Gemini 2.5 Flash — frequently asked questions
- How much does Gemini 2.5 Flash cost?
- Gemini 2.5 Flash is billed pay-as-you-go at $0.40 per 1M input tokens and $2.50 per 1M output tokens. There is no subscription — you only pay for what you use.
- What is the context window of Gemini 2.5 Flash?
- Gemini 2.5 Flash supports a context window of up to 1M tokens. It can return up to 66K tokens in a single response.
- What can Gemini 2.5 Flash do?
- Gemini 2.5 Flash supports Vision, Tool calling, Reasoning, Documents, Prompt caching.
- Is Gemini 2.5 Flash free to use?
- Gemini 2.5 Flash is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
- How do I use Gemini 2.5 Flash via the API?
- Gemini 2.5 Flash is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID gemini-2.5-flash with your Api.Airforce API key.
- Who makes Gemini 2.5 Flash?
- Gemini 2.5 Flash is Google's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.
Use Gemini 2.5 Flash via the API
OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass gemini-2.5-flash as the model.
curl https://api.airforce/v1/chat/completions \
-H "Authorization: Bearer $AIRFORCE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gemini-2.5-flash",
"messages": [{ "role": "user", "content": "Hello!" }]
}'from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
model="gemini-2.5-flash",
messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
model: "gemini-2.5-flash",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);