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OpenKey

LFM2.5-1.2B-Thinking (free)

Liquid AIReleased Jan 20, 2026Free

LFM2.5-1.2B-Thinking is a lightweight reasoning-focused model optimized for agentic tasks, data extraction, and RAG—while still running comfortably on edge devices. It supports long context (up to 32K tokens) and is...

Try in playground
Context window
33K tokens
Input
text
Output
text
Tokenizer
Other
Released
Jan 20, 2026
Reasoning
always on

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
InputFreeFree
OutputFreeFree

Supported parameters

  • frequency_penalty
  • include_reasoning
  • max_tokens
  • min_p
  • presence_penalty
  • reasoning
  • repetition_penalty
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_k
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model liquid/lfm-2.5-1.2b-thinking:free.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "liquid/lfm-2.5-1.2b-thinking:free",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

completion = client.chat.completions.create(
    model="liquid/lfm-2.5-1.2b-thinking:free",
    messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "liquid/lfm-2.5-1.2b-thinking:free",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does LFM2.5-1.2B-Thinking (free) cost via API?
LFM2.5-1.2B-Thinking (free) is free through OpenKey while Liquid AI offers it at no charge. No fee applies to free models.
What is LFM2.5-1.2B-Thinking (free)'s context window?
LFM2.5-1.2B-Thinking (free) accepts up to 33K tokens of context.
Is LFM2.5-1.2B-Thinking (free) OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "liquid/lfm-2.5-1.2b-thinking:free" using any OpenAI SDK — only the base URL and API key change.
What inputs does LFM2.5-1.2B-Thinking (free) support?
LFM2.5-1.2B-Thinking (free) accepts text input and produces text output.

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