Gemini 3.1 Pro Preview Custom Tools

google/gemini-3.1-pro-preview-customtools
by Google · text+audio+image+video+file in · text out · 1.05M ctx · 2026-02-25

Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection beha…

Endpoints:/v1/chat/completions/v1beta/models/{model}:generateContent
INPUT$4.00/ 1M tokens
OUTPUT$18.00/ 1M tokens
p50 TTFT3.86 s7d
p95 TTFT6.10 s7d
TRAFFIC30.7Ktokens / 7d
▶ Try in playground</> Use via API
Code samples
from openai import OpenAI

client = OpenAI(
    base_url="https://orcarouter.ai/v1",
    api_key="$ORCAROUTER_API_KEY",
)

response = client.chat.completions.create(
    model="google/gemini-3.1-pro-preview-customtools",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)
Pricing
Input / 1M tokens$4.00
Output / 1M tokens$18.00
Cache read / 1M$0.400
CurrencyUSD
Performancelast 7 days
TTFT p50
3.86 s
Output speed
1179 tok/s
TTFT p95
6.10 s
Error rate
0%
Public benchmarksLast evaluated 2026-02-19
AA Coding
55.5
AA Intelligence
57.2
GPQA Diamond
94.1
Humanity's Last Exam
44.7
IFBench
77.1
Long-Context Recall
72.7
SciCode
58.9
TerminalBench Hard
53.8
τ²-Bench
95.6
Source: artificialanalysis.ai
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FAQ
How much does Google: Gemini 3.1 Pro Preview Custom Tools cost on OrcaRouter?
Google: Gemini 3.1 Pro Preview Custom Tools is priced at $4.00 per 1M input tokens and $18.00 per 1M output tokens via OrcaRouter. Pricing is pulled live from the routing layer.
What is Google: Gemini 3.1 Pro Preview Custom Tools's context window?
Google: Gemini 3.1 Pro Preview Custom Tools supports a context window of 1M tokens. Use long-context features (RAG, summarisation) up to that limit.
How do I call Google: Gemini 3.1 Pro Preview Custom Tools via the OpenAI SDK?
Set OpenAI base_url to https://orcarouter.ai/v1, supply your OrcaRouter API key, and pass model="google/gemini-3.1-pro-preview-customtools" in the chat.completions.create call.
Does OrcaRouter rate-limit Google: Gemini 3.1 Pro Preview Custom Tools?
Per-model rate limits follow your OrcaRouter plan. Free tiers ship with conservative caps; paid tiers lift them. Check /pricing for current quotas.
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Google: Gemini 3.1 Pro Preview Custom Tools•$4.00/M in•3864ms p50•via OrcaRouter
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