Gemini 2.5 Pro

Gemini 2.5 Pro is Google's Pro-tier model in the Gemini 2.5 family, built for advanced reasoning, coding, mathematics, and scientific tasks.

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input · usd / 1m tok

$1.25

output · usd / 1m tok

$10.00

context window

1mtokens

modalities · in → out

pricing

base api ratesusd per 1m tokens

input: $1.25over 200k · $2.50
output: $10.00over 200k · $15.00
cache read: $0.125over 200k · $0.25

brackets are by input tokens per request: a request over a threshold is billed at that bracket's rates for all of its tokens. cache creation can have a separate charge.

providers

Google hosts Gemini 2.5 Pro. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

Google

specifications

takes text, image, audio and video in, gives text outgoogle/gemini-2.5-pro

creatorGoogle
model typeText generation
context window1,000,000 tokens
maximum outputnot published
input
takes text, image, audio and video in, gives text out
outputtext
tool callingnot verified
releasedjun 17, 2025
endpoint/v1/chat/completions

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.

try it · your prompt, this model, live

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="google/gemini-2.5-pro",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="google/gemini-2.5-pro",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

benchmarks

intelligence index

16.1#86 of 113 models on the gateway

coding index33.3#55 of 66
agentic index1.6#51 of 54
omniscience-16.4#63 of 90
gpqa84.4%#46 of 82
humanity’s last exam22.5%#62 of 93

AIME 202587.7%
GPQA84.4%
LiveCodeBench80.1%
MMMU-Pro74.9%
AA-LCR69.0%
Tau254.1%
IFBench48.7%
SciCode46.3%
Terminal-Bench Hard26.5%
Humanity’s Last Exam22.5%
Multilingual LCR12.2%
GDP.pdf All-pass10.2%
Tau Banking9.7%
CritPt2.6%
AutomationBench Partial2.2%

Intelligence Index16.08
Omniscience Index-16.35
GDPval Elo452.91
legal index (API)23.7
coding index (API)33.3
agentic index (API)1.6
economics index (API)24.5
engineering index (API)18.9
intelligence index (API)16.1
strategy and ops index (API)12.6
finance and accounting index (API)17.3
healthcare and medical index (API)15

view source ↗all source data and breakdowns (json) ↗

each configuration is listed separately; these evaluations describe the tested model configuration, and performance and costs can differ on impossibl. unmeasured scores are omitted and api values keep their source units. last checked 2026-10-22.

compare Gemini 2.5 Pro with other models

frontier labs and open weights, best-ranked firstusd / 1m tok · in / out

anthropic/claude-opus-5-5$4.00 / $20.00compare →
moonshotai/kimi-k3.1-pro$2.00 / $10.00compare →
openai/gpt-6-astra$10.00 / $50.00compare →
meta/muse-wonder$4.00 / $20.00compare →

impossibl models --all →

frequently asked questions

What is Gemini 2.5 Pro?

Gemini 2.5 Pro is Google's Pro-tier model in the Gemini 2.5 family, built for advanced reasoning, coding, mathematics, and scientific tasks. It was Google's first generally available Pro model with built-in thinking, reasoning through a response before answering, and remains the deepest reasoning and coding option in the 2.5 generation.

How much does Gemini 2.5 Pro cost?

Gemini 2.5 Pro costs $1.25 per million input tokens and $10.00 per million output tokens through the Impossibl API. Cache reads cost $0.125 per million tokens. These base rates apply through 200,000 total input tokens per request. Above 200,000 input tokens, the long-context rates in the pricing table apply to the whole request. All rates are in USD.

view the pricing table ↑

What is the context length of Gemini 2.5 Pro?

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

What inputs and outputs does Gemini 2.5 Pro support?

Gemini 2.5 Pro accepts text, image, audio, and video as input. Gemini 2.5 Pro returns text.

How do I use Gemini 2.5 Pro through an API?

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

follow the api quickstart →

When was Gemini 2.5 Pro released?

Google released Gemini 2.5 Pro on June 17, 2025.

Creator release announcement ↗

this page describes Gemini 2.5 Pro as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes. model descriptions and release dates, where available, use the creator sources linked under the answers above.

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