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OpenBMB · Released May 19, 2026

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.

  • Open weights
  • Reasoning
  • Tool calling
Capability
—No ECI score yet
Input
—No listed price
Output
—No listed price
Context
131K131K max output
Pricing

What it costs

No per-token price is published for this model yet.

No per-token price is listed for this model on models.dev.

Capability

Independent benchmarks

Epoch AI has not published a Capabilities Index score for MiniCPM5-1B yet.

Specifications

The details

Lab
OpenBMB
Released
May 19, 2026
Context window
131,072 tokens
Max output
131,072 tokens
Inputs
Text
Output
Text
Reasoning
Always on
Tool calling
Yes
Structured output
No
Same lab

More from OpenBMB

Questions

About MiniCPM5-1B

How much does MiniCPM5-1B cost?

MiniCPM5-1B has no published per-token API price on models.dev yet.

What is the context window of MiniCPM5-1B?

MiniCPM5-1B accepts up to 131,072 tokens per request and can write up to 131,072 tokens in one response.

How good is MiniCPM5-1B?

Epoch AI has not published a Capabilities Index score for MiniCPM5-1B yet.

Is MiniCPM5-1B open source?

Yes. OpenBMB publishes the weights under the apache-2.0 licence, so it can be downloaded and self-hosted.

What inputs does MiniCPM5-1B support?

MiniCPM5-1B accepts text and replies in text. It is a reasoning model, supports tool calling.

When was MiniCPM5-1B released?

OpenBMB released MiniCPM5-1B on May 19, 2026.

What are the best alternatives to MiniCPM5-1B?

The closest current models from other labs on capability, price and release date are Command A Plus (Cohere, $2.50 / $10.00), Step 3.7 Flash (StepFun, $0.185 / $1.11), Gemini 3.1 Flash Lite (Google, $0.25 / $1.50) and MAI-Code-1-Flash (Microsoft).