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openbmbReleased Sep 6, 2026

openbmb: MiniCPM5-2B

openbmb/minicpm5-2bHugging FaceChatconversationaledge-aienllamalong-contextminicpmminicpm5on-devicereasoningtext-generationtool-callingtools

Input
$0.003
Per million input tokens
Output
$0.01
Per million output tokens
Context
131K
Largest endpoint
Max output
131K
Largest endpoint
Modality
Text → Text
text

Providers

Live endpoints for this model, cheapest first. TTFT is time to first token, measured on streamed requests; response is request to last byte, measured on every request; throughput covers the last day; uptime is measured over the last day and week.

ProviderContextMax outInputOutputCache readTTFTResponseThroughputCapacityUptime 1dUptime 7dToolsReasoningHealthData
ImpCCbf1690% offCA131K131K$0.003$0.01$0.00173ms30m126ms30m214 tok/s8/8 free100.0%96.7%VerifiedEffortHealthyZDR

Pricing

USD per million tokens.

ProviderInputOutputCache read
ImpCCbf1690% off$0.003$0.01$0.001

Price history

Input price · USD per million tokens

Output price · USD per million tokens

Performance

Timing percentiles cover the labelled window: the last 30 minutes when it has enough samples, otherwise the last day. TTFT is the seconds to the first token, measured only on streamed requests; response is the seconds from request to last byte, measured on every request, streamed or not. Throughput is output tokens per second over the last day, counted only over streamed generations long enough to have a rate — a buffered answer has no generation phase, and a two-token one times the scheduler rather than the model. Tool calls is the share of the last day of tool requests this endpoint answered with a tool call, published once the day holds twenty of them; under that the cell is blank rather than a rate nothing measured.

ProviderTTFT p50p75p90p99Response p50p75p90p99Throughput p50p75p90p99Tool calls 1dRunaways 1d
ImpCCbf1673ms30m92ms207ms207ms126ms30m337ms730ms730ms214 tok/s231 tok/s251 tok/s272 tok/s——

Time to first token by hour · last 7 days

Hourly median per provider. The line spans hours with no streamed traffic; where samples are sparse, a dot marks each hour actually timed.

Throughput by hour · last 7 days

Hourly median output tokens per second per provider, over generations long enough to have a rate. The line spans hours with no answer long enough to measure; where samples are sparse, a dot marks each hour actually measured.

Uptime

Share of successful requests and probes over the last day and week.

  • ImpCCbf16
    1d 100.0%7d 96.7%Healthy

Availability by hour · last 7 days

Share of successful requests and probes per hour and provider. The line spans hours with nothing to measure; where samples are sparse, a dot marks each hour actually measured.

Activity

Prompt tokens and completion tokens per UTC day over the last 30 days. Every billed request counts, the platform's own paid probe traffic included.

Prompt tokens12.6Mlast 30 days
Completion tokens2.3Mlast 30 days
Quickstart
curl https://api-staging.heimdallm.com/api/v1/chat/completions \  -H "Authorization: Bearer $HEIMDALL_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "openbmb/minicpm5-2b",    "messages": [{ "role": "user", "content": "Hello" }]  }'

Set HEIMDALL_API_KEY to a key from your account. See the quickstart for routing suffixes and provider preferences.

About

We are releasing MiniCPM5-2B, the second model in the MiniCPM5 series, following MiniCPM5-1B. It is a dense 2B Transformer that scales up the same training recipe, built for on-device, local deployment, and resource-constrained scenarios, reaching 2B-class open-source SOTA.

Author
openbmb
Family
openbmb/minicpm5-2b
Parameters
frequency_penalty (-2–2), ignore_eos (true/false), logit_bias (any value), logprobs (true/false), max_completion_tokens (1–131072), max_tokens (1–131072), min_p (0–1), n (≥1), no_stop_trim (true/false), parallel_tool_calls (true/false), presence_penalty (-2–2), reasoning_effort (none, medium), repetition_penalty (>0, ≤2), response_format (any value), skip_special_tokens (true/false), stop (text or list), stop_regex (text or list), stop_token_ids (list), structured_outputs (true/false), temperature (0–2), tool_choice (any value), tools (list), top_k (-1–200), top_logprobs (0–20), top_p (>0, ≤1)
Licence
apache-2.0
Size
2.5B parameters, BF16 weights
Tokenizer
—
Available until
—

From the model card

What the repository states about these weights, read from openbmb/MiniCPM5-2B on Oct 10, 2026.

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