Openbmb: MiniCPM5-1B

Dense 1B-class open-source model for on-device and resource-constrained use, with native long-context support, Think / No Think chat modes, and tool calling

Model lab: Openbmb
Model family: —

Model resources

Hugging Face

Modalitiestext → text

Context window131,072

Maximum output131,072

Try now

Quickstart

Use your Moduck API Key, set the API base URL to https://api.moduck.ai/v1, and set the model parameter to openbmb/minicpm5-1b.

import os
import requests

base_url = "https://api.moduck.ai/v1"
api_key = os.environ["MODUCK_API_KEY"]
model_id = "openbmb/minicpm5-1b"

response = requests.post(
    f"{base_url}/chat/completions",
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    json={
        "model": model_id,
        "messages": [{"role": "user", "content": "Hello!"}],
        "stream": False,
    },
    timeout=60,
)
response.raise_for_status()
print(response.json())

Use the familiar OpenAI-style chat request format to make model integration easier.

MiniCPM5-1B API Pricing

Price currently unavailable

Benchmarks

Reasoning

Intelligence Index · v4.38.8

Coding Index—

Agentic Index—

Performance

Performance trends

Throughput88.5 tok/sCurrent

Time to first token1.4 sCurrent

End-to-end latency8.2 sCurrent

Throughput

Current88.5 tok/s

Window average89.1 tok/s

Time to first token

Current1.4 s

Window average1.5 s

End-to-end latency

Current8.2 s

Window average7.5 s

Tail latency (P99)

Current17.9 s

Window average17.6 s

Prompt cache hit rate

Current18.1%

Window average24.6%

Error rate

Current0.0%

Window average0.1%

Availability

Uptime100%At least one provider responded

Availability100%Requests actually served

Error rate0%Share of failed requests

Served requests, hour by hour

24 hours agoNow

MiniCPM5-1B Compare models

Model	Input price	Output price	Context window	Capabilities
MiniCPM5-1BThis page	Price currently unavailable	Price currently unavailable	131,072	Text output · Reasoning · Tool calling
MiniCPM5-2B	USD 0.0992 / 1M tokens	USD 0.594 / 1M tokens	131,072	Text output · Reasoning · Tool calling
Beam 1.0 501B A23B	USD 0.2 / 1M tokens	USD 0.8 / 1M tokens	1,048,576	Text output · Reasoning · Tool calling
Ling 3.1 Flash	USD 0.06 / 1M tokens	USD 0.176 / 1M tokens	262,144	Text output · Reasoning · Tool calling
Schematron V2 Small	USD 0.04 / 1M tokens	USD 0.184 / 1M tokens	128,000	Text output

Model specifications

Input: text
Output: text
Context window: 131,072
Maximum output: 131,072
Release date: 2026-05-19
Attachments: No
Reasoning: Yes
Tool calling: Yes
Temperature setting: Yes
Open weights: Yes

Frequently asked questions

What is MiniCPM5-1B for?

Dense 1B-class open-source model for on-device and resource-constrained use, with native long-context support, Think / No Think chat modes, and tool calling

What inputs and outputs does MiniCPM5-1B support?

Recorded inputs: text; outputs: text.

How is MiniCPM5-1B priced?

This page does not list a price for this model yet.

What specifications are recorded for MiniCPM5-1B?

Current model records list Context window 131,072 tokens; Maximum output 131,072 tokens.

What model parameter does the Quickstart use?

The example uses openbmb/minicpm5-1b. This value comes from the page identifier and is not confirmed as a callable Moduck public ID.

Can I call this model through the Moduck API now?

This page has no verified Moduck API call for this model. A Quickstart example or reserved ID does not establish access; check the models available to your account.