Gemini 2.5 Pro
GoogleReleased Jun 17, 2025
Gemini 2.5 Pro is Google’s state-of-the-art AI model designed for advanced reasoning, coding, mathematics, and scientific tasks. It employs “thinking” capabilities, enabling it to reason through responses with enhanced accuracy...
- Context window
- 1.0M tokens
- Max output
- 66K tokens
- Input
- text, image, file, audio, video
- Output
- text
- Tokenizer
- Gemini
- Knowledge cutoff
- Jan 31, 2025
- Released
- Jun 17, 2025
- Reasoning
- always on
Pricing
Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.
| Per 1M tokens | Provider | + 3% fee | You pay |
|---|---|---|---|
| Input | $1.25 | $0.037 | $1.29 |
| Output | $10.00 | $0.300 | $10.30 |
| Cache read | $0.125 | $0.0037 | $0.129 |
| Cache write | $0.375 | $0.011 | $0.386 |
Benchmarks
Artificial Analysis
- Intelligence index
- 25.8
- Coding index
- 33.3
- Agentic index
- 7.1
Design Arena
| Category | Elo | Win rate | Rank |
|---|---|---|---|
| 3Dmodels | 1159 | 52.2% | #57 |
| Codemodels | 1203 | 58.3% | #51 |
| Data vizmodels | 1290 | 71.8% | #12 |
| Game devmodels | 1178 | 55.1% | #56 |
| UI componentsmodels | 1200 | 60.5% | #48 |
| Websitesmodels | 1210 | 58.8% | #49 |
Head-to-head preference voting. How we filter and rank
Supported parameters
- include_reasoning
- max_tokens
- reasoning
- response_format
- seed
- stop
- structured_outputs
- temperature
- tool_choice
- tools
- top_p
Call it
OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model google/gemini-2.5-pro.
curl https://api.openkey.ai/v1/chat/completions \
-H "Authorization: Bearer $OPENKEY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "google/gemini-2.5-pro",
"messages": [{"role": "user", "content": "Hello"}]
}'import os
from openai import OpenAI
client = OpenAI(
base_url="https://api.openkey.ai/v1",
api_key=os.environ["OPENKEY_API_KEY"],
)
completion = client.chat.completions.create(
model="google/gemini-2.5-pro",
messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.openkey.ai/v1",
apiKey: process.env.OPENKEY_API_KEY,
});
const completion = await client.chat.completions.create({
model: "google/gemini-2.5-pro",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);Questions
- How much does Gemini 2.5 Pro cost via API?
- Through OpenKey, Gemini 2.5 Pro costs $1.29 per 1M input tokens and $10.30 per 1M output tokens. That is the provider price ($1.25 / $10.00) plus a flat 3% fee — nothing else.
- What is Gemini 2.5 Pro's context window?
- Gemini 2.5 Pro accepts up to 1.0M tokens of context and returns up to 66K tokens per request.
- Is Gemini 2.5 Pro OpenAI-compatible?
- Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "google/gemini-2.5-pro" using any OpenAI SDK — only the base URL and API key change.
- What inputs does Gemini 2.5 Pro support?
- Gemini 2.5 Pro accepts text, image, file, audio, video input and produces text output. Its knowledge cutoff is Jan 31, 2025.
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