Good for
Google’s long-context models: Flash for fast, cheap answers, Pro and Argon for large documents and codebases.
| Model ID | gemini-3.1-pro |
| Vendor | |
| Family | Gemini |
| Balance rate | ×1 / ×6 |
| Cache read | $0.02 per 1M tokens |
Requests longer than 200,000 tokens are billed at the vendor’s higher long-context rate, here too.
Both API formats
The model answers in the Anthropic Messages format and in the OpenAI Chat Completions format. Only the address and the key change.
curl https://api.klinch.cloud/v1/messages \
-H "x-api-key: kl_live_…" \
-H "content-type: application/json" \
-d '{"model": "gemini-3.1-pro", "max_tokens": 1024,
"messages": [{"role": "user", "content": "Hello"}]}'from openai import OpenAI
client = OpenAI(base_url="https://api.klinch.cloud/v1", api_key="kl_live_…")
r = client.chat.completions.create(
model="gemini-3.1-pro",
messages=[{"role": "user", "content": "Hello"}],
)
print(r.choices[0].message.content)FAQ
How much does Gemini 3.1 Pro cost on KLINCH?
$0.2 per 1M input tokens and $1.2 per 1M output tokens. Google’s list price is $2 and $12. The balance is charged ×1 per input and ×6 per output token.
How do I call Gemini 3.1 Pro through the API?
Use the KLINCH API address, your kl_live_… key and the model gemini-3.1-pro. The Anthropic SDK, the OpenAI SDK, Claude Code, Cursor and any client with a custom base URL work.
Is there a subscription?
No. You buy a token pack once and tokens are charged as you use them.
Is this the official Google API?
No. KLINCH is not affiliated with Google. We provide access to the model through our own gateway that speaks the Anthropic and OpenAI APIs.
One key, one balance, every top model
Claude, GPT, Gemini, DeepSeek and Grok at a tenth of the official price. No subscription, pay as you go.