JevForAgents
⌘K
Advertise
Free modelsLiquidAI: LFM2.5-2.6B
MODEL CALLING GUIDE · OPENROUTER

Use LiquidAI: LFM2.5-2.6B for free via OpenRouter

Liquid AI · 65,536 token context on this channel · Reasoning, Tool calling. This guide documents a specific API channel and has not run an inference request.

Docs checked 2026-09-29Inference not testedOpenAI Chat Completions
Get official API key ↗Official API guide ↗
01 / FREE TERMS

Check the free conditions first

Free typeFree quota
Price in this tier$0 prompt and completion for this exact :free ID
Quota50 requests per day on the Free planShared account-level limit for free models
RegistrationRequired
Payment cardNot required for this free tier
Phone verificationReported not requiredBased on the freeLLM provider page; not account-tested by us.
Region / eligibilityNot confirmed for every accountCheck the platform signup and model page for your region.
Free periodNo announced end date · subject to changeNo announced end date; the free endpoint or limits can change.
02 / GET STARTED

Five steps to a first response

  1. 1

    Create or sign in to your free account

    Open OpenRouter and choose the free account. The published Free plan has API access and no payment method.

    View Free plan ↗
  2. 2

    Create an API key

    Open the API Keys page while signed in and create a key. Copy it into a local environment variable; this site never asks for it.

    Open API Keys ↗
  3. 3

    Use this exact free variant

    Copy the Base URL and Model ID below. Keep the :free suffix; the plain model ID can have different pricing.

  4. 4

    Send the sample request from your terminal

    Set OPENROUTER_API_KEY locally, then run the cURL example. It asks for a short text reply and does not enable paid fallback.

  5. 5

    If the free limit is reached

    Check your account limit or wait for the quota to reset. Recheck the official model page before trying another model; do not silently switch to a paid ID.

    Check current limits ↗
03 / CONNECTION

Copy these exact public values

SDK Base URLhttps://openrouter.ai/api/v1
Full HTTP endpointhttps://openrouter.ai/api/v1/chat/completions
Model IDliquid/lfm-2.5-2.6b:free
Protocol / authenticationOpenAI Chat Completions · Bearer $OPENROUTER_API_KEY
Extra required fieldsNone documented for this text request
04 / FIRST CALL

Minimal cURL request

Run this on your own computer. Set OPENROUTER_API_KEY in your local shell first. The page never collects or sends your key. The sample requests at most 32 output tokens and contains no paid fallback.

Terminal
# Set OPENROUTER_API_KEY in your own terminal first. Do not paste it into this site.
curl 'https://openrouter.ai/api/v1/chat/completions' \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"model":"liquid/lfm-2.5-2.6b:free","messages":[{"role":"user","content":"Reply with one short greeting."}],"max_tokens":32}'

A 401/403 can indicate a key or account issue; 404 can indicate a changed model ID; 429 usually points to a limit. Check OpenRouter's own error details before changing plans.

05 / SOURCES

Where these details came from

Documentation checked 2026-09-29. Inference request: not run. Prices, quotas and access can change.

More models on OpenRouter
← Back to all documented free models