LFM2.5-1.2B-SFT-Claude-Opus-Reasoning
Released by ermiaazarkhalili in 2026, LFM2.5-1.2B-SFT-Claude-Opus-Reasoning is a 1 billion parameter chat model. LFM2.5-1.2B-SFT-Claude-Opus-Reasoning is an open-weights chat model with roughly 1 billion parameters.
by ermiaazarkhalili · 1B parameters
Best for
Ways to use LFM2.5-1.2B-SFT-Claude-Opus-Reasoning in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your ermiaazarkhalili API key. osFoundry discovers LFM2.5-1.2B-SFT-Claude-Opus-Reasoning automatically — assign it to a Maestro role (router, direct, orchestrator, or fallback) in the Pipeline tab and it is live in every chat. Your key, your provider account — no token markup.
Deploy a dedicated endpoint
LFM2.5-1.2B-SFT-Claude-Opus-Reasoning is open-weights — run it locally for free, or deploy a dedicated GPU endpoint in your workspace for reserved capacity with no rate limits.
Use it in a Room App
Room Apps declare AI features in their manifest, then call them with invokeAI:
import { invokeAI } from '@osfoundry/app-sdk'
// 'summarize' is an AI feature declared in your app manifest.
const result = await invokeAI('summarize', userText)
Call it from your own apps
Once a model is wired into your workspace you can host it as an API and reach it from your own services, scripts, or CI — outside osFoundry.
What hardware can run LFM2.5-1.2B-SFT-Claude-Opus-Reasoning
LFM2.5-1.2B-SFT-Claude-Opus-Reasoning runs on a single 16GB consumer GPU (~1 GB VRAM with KV-cache headroom). Full-precision inference fits on a single H100 80GB at FP16 precision (~3 GB).
LFM2.5-1.2B-SFT-Claude-Opus-Reasoning vs similar models
Licence
Unspecified — Licence terms not specified — verify the upstream model card before commercial use.
Check upstream documentation.
Frequently asked about LFM2.5-1.2B-SFT-Claude-Opus-Reasoning
Is LFM2.5-1.2B-SFT-Claude-Opus-Reasoning free to use?
LFM2.5-1.2B-SFT-Claude-Opus-Reasoning is free to run locally on your own hardware. Hosted access through osFoundry is metered (input Free (local), output Free (local)). You can switch between local and hosted at any time.
Can I use LFM2.5-1.2B-SFT-Claude-Opus-Reasoning commercially?
Commercial use is allowed with conditions. Licence terms not specified — verify the upstream model card before commercial use. Check upstream documentation.
How much VRAM does LFM2.5-1.2B-SFT-Claude-Opus-Reasoning need?
Approximately 1 GB at Q4 quantisation, or 3 GB at full FP16 precision. Fits on a single 24GB consumer GPU.
Can I run LFM2.5-1.2B-SFT-Claude-Opus-Reasoning locally?
Yes. LFM2.5-1.2B-SFT-Claude-Opus-Reasoning is open-weights and runs locally on a workstation GPU. osFoundry's local runtime handles model loading, quantisation, and routing.
What is LFM2.5-1.2B-SFT-Claude-Opus-Reasoning best at?
LFM2.5-1.2B-SFT-Claude-Opus-Reasoning is well-suited to text generation.
How do I use LFM2.5-1.2B-SFT-Claude-Opus-Reasoning in osFoundry?
Paste your ermiaazarkhalili API key in the key dialog (or deploy the open weights for self-hostable models), assign LFM2.5-1.2B-SFT-Claude-Opus-Reasoning to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by ermiaazarkhalili on April 19, 2026. Source: https://huggingface.co/ermiaazarkhalili/LFM2.5-1.2B-SFT-Claude-Opus-Reasoning