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

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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

Measured on the Moduck gateway across live traffic, hour by hour over the last 24 hours. Time to first token is how long before anything appears; throughput is how fast the answer is written after that; end-to-end latency is the whole round trip. Figures are medians unless the card says otherwise.

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

Uptime is the share of time at least one provider serving this model responded. Availability is stricter: the share of requests actually served. A provider that answers but fails part of the traffic lowers availability without lowering uptime. Both cover the last three days.

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.