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OpenKey

Gemini 2.5 Pro Preview 06-05

GoogleReleased Jun 5, 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...

Try in playground
Context window
1.0M tokens
Max output
66K tokens
Input
file, image, text, audio
Output
text
Tokenizer
Gemini
Knowledge cutoff
Jan 31, 2025
Released
Jun 5, 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 tokensProvider+ 3% feeYou 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

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-preview.

Code sample language
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-preview",
    "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-preview",
    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-preview",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does Gemini 2.5 Pro Preview 06-05 cost via API?
Through OpenKey, Gemini 2.5 Pro Preview 06-05 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 Preview 06-05's context window?
Gemini 2.5 Pro Preview 06-05 accepts up to 1.0M tokens of context and returns up to 66K tokens per request.
Is Gemini 2.5 Pro Preview 06-05 OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "google/gemini-2.5-pro-preview" using any OpenAI SDK — only the base URL and API key change.
What inputs does Gemini 2.5 Pro Preview 06-05 support?
Gemini 2.5 Pro Preview 06-05 accepts file, image, text, audio input and produces text output. Its knowledge cutoff is Jan 31, 2025.

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