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Open weights model

Released May 2026

LFM2.5-8B-A1B: Analyse von Intelligenz, Leistung und Preis

Modellübersicht

Intelligenz

8
Artificial Analysis Intelligence Index
2 von 4 Einheiten für Intelligenz.

Geschwindigkeit

337.8
Ausgabetokens pro Sekunde
4 von 4 Einheiten für Geschwindigkeit.

Eingabepreis

0,00 $
USD pro 1 Mio. Tokens
1 von 4 Einheiten für Eingabepreis.

Ausgabepreis

0,00 $
USD pro 1 Mio. Tokens
1 von 4 Einheiten für Ausgabepreis.

Ausführlichkeit

k. A.
Ausgabetokens im Intelligence Index
Unbekannter Wert von 4 Einheiten für Ausführlichkeit.

LFM2.5-8B-A1B zählt bei der Intelligenz zu den unterdurchschnittlichen Modellen, ist aber preislich gut aufgestellt im Vergleich zu anderen Modellen mit offenen Gewichten ähnlicher Größe. Das Modell unterstützt Text als Eingabe und Text als Ausgabe. Das Kontextfenster umfasst 33k Tokens.

LFM2.5-8B-A1B erzielt im Artificial Analysis Intelligence Index einen Wert von 8 und liegt damit unter dem Durchschnitt der vergleichbaren Modelle (Median: 9).

Der Preis für LFM2.5-8B-A1B beträgt $0.00 pro 1 Mio. Eingabetokens (preislich konkurrenzfähig; Median: $0.04) und $0.00 pro 1 Mio. Ausgabetokens (preislich konkurrenzfähig; Median: $0.15).

Mit 338 Tokens pro Sekunde ist LFM2.5-8B-A1B auffallend schnell (Median: 99).

ReasoningJa

Diese Seite zeigt die Reasoning-Version dieses Modells.

Möglicherweise gibt es auch eine Variante ohne Reasoning.

Eingabemodalität

Unterstützt: Text

Ausgabemodalität

Unterstützt: Text

Kontextfenster33k
~49 A4-Seiten in Arial mit Schriftgröße 12
Gesamtparameter8.3B
Aktive Parameter1.5B
Anzahl der pro Token während der Inferenz aktiven Parameter
Lizenzlfm 1.0
ModellgewichteHugging Face

Metriken werden mit Modellen derselben Klasse verglichen:

  • Modelle ohne Reasoning → Vergleich nur mit anderen Modellen ohne Reasoning
  • Reasoning-Modelle → Vergleich mit Reasoning-Modellen und Modellen ohne Reasoning
  • Modelle mit offenen Gewichten → Vergleich nur mit anderen Modellen mit offenen Gewichten derselben Größenklasse:
    • Sehr klein: ≤4B Parameter
    • Klein: 4B–40B Parameter
    • Mittel: 40B–150B Parameter
    • Groß: >150B Parameter
  • Proprietäre Modelle → Vergleich mit proprietären Modellen und Modellen mit offenen Gewichten derselben Preisklasse anhand eines Mischpreisverhältnisses von 3:1 für Eingabe/Ausgabe:
    • <$0.15 pro 1 Mio. Tokens
    • $0.15–$1 pro 1 Mio. Tokens
    • >$1 pro 1 Mio. Tokens

Wichtigste Ergebnisse

Artificial Analysis Intelligence Index · Higher is better
Output tokens per second · Higher is better
Weighted average cost (USD) per Intelligence Index task · Lower is better

Intelligenz

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index v4.1 incorporates 9 evaluations: GDPval-AA v2, 𝜏³-Banking, Terminal-Bench v2.1, SciCode, Humanity's Last Exam, GPQA Diamond, CritPt, AA-Omniscience, AA-LCR
Estimate (independent evaluation forthcoming)
Reasoning models are indicated by a lightbulb icon

Artificial Analysis Intelligence Index v4.1 includes: GDPval-AA v2, 𝜏³-Banking, Terminal-Bench v2.1, SciCode, Humanity's Last Exam, GPQA Diamond, CritPt, AA-Omniscience, AA-LCR. See Intelligence Index methodology for further details, including a breakdown of each evaluation and how we run them.

Artificial Analysis Intelligence Index by Open Weights / Proprietary

Artificial Analysis Intelligence Index v4.1 incorporates 9 evaluations: GDPval-AA v2, 𝜏³-Banking, Terminal-Bench v2.1, SciCode, Humanity's Last Exam, GPQA Diamond, CritPt, AA-Omniscience, AA-LCR
Estimate (independent evaluation forthcoming)
Reasoning models are indicated by a lightbulb icon

Artificial Analysis Intelligence Index v4.1 includes: GDPval-AA v2, 𝜏³-Banking, Terminal-Bench v2.1, SciCode, Humanity's Last Exam, GPQA Diamond, CritPt, AA-Omniscience, AA-LCR. See Intelligence Index methodology for further details, including a breakdown of each evaluation and how we run them.

Indicates whether the model weights are available. Models are labelled as 'Commercial Use Restricted' if the weights are available but commercial use is limited (typically requires obtaining a paid license).

Intelligence Evaluations

Intelligence evaluations measured independently by Artificial Analysis · Higher is better

Agentic real-world work tasks, (Elo-500)/2000

Agentic tool use

Agentic coding & terminal use

Coding

Reasoning & knowledge

Scientific reasoning

Physics reasoning

Long context reasoning

Agentic knowledge work, Elo

Agentic SaaS workflows

Legal agentic work, criterion pass rate

Agentic business operations

Instruction following

Long-horizon agentic tasks

Kubernetes incident root-cause analysis

Visual reasoning

Reasoning models are indicated by a lightbulb icon

While model intelligence generally translates across use cases, specific evaluations may be more relevant for certain use cases.

Artificial Analysis Intelligence Index v4.1 includes: GDPval-AA v2, 𝜏³-Banking, Terminal-Bench v2.1, SciCode, Humanity's Last Exam, GPQA Diamond, CritPt, AA-Omniscience, AA-LCR. See Intelligence Index methodology for further details, including a breakdown of each evaluation and how we run them.

AA-Omniscience

AA-Omniscience Index

AA-Omniscience Index (higher is better) measures knowledge reliability and hallucination. It rewards correct answers, penalizes hallucinations, and has no penalty for refusing to answer. Scores range from -100 to 100, where 0 means as many correct as incorrect answers, and negative scores mean more incorrect than correct.
Reasoning models are indicated by a lightbulb icon

AA-Omniscience Index (higher is better) measures knowledge reliability and hallucination. It rewards correct answers, penalizes hallucinations, and has no penalty for refusing to answer. Scores range from -100 to 100, where 0 means as many correct as incorrect answers, and negative scores mean more incorrect than correct.

Openness Index

Artificial Analysis Openness Index: Score

Openness Index assesses model openness on a 0 to 100 normalized scale (higher is more open)
Reasoning models are indicated by a lightbulb icon

Vergleiche des Intelligence Index

Intelligence Index vs. Cost per Intelligence Index Task

Artificial Analysis Intelligence Index · Weighted average cost (USD) per Artificial Analysis Intelligence Index task
Most attractive quadrant
Pareto line
Reasoning models are indicated by a lightbulb icon

Weighted average cost per Intelligence Index task. Each evaluation’s cost is calculated from input, cache hit, cache write, reasoning, and answer token prices, divided by task count, and weighted by its Intelligence Index weight.

Artificial Analysis Intelligence Index v4.1 includes: GDPval-AA v2, 𝜏³-Banking, Terminal-Bench v2.1, SciCode, Humanity's Last Exam, GPQA Diamond, CritPt, AA-Omniscience, AA-LCR. See Intelligence Index methodology for further details, including a breakdown of each evaluation and how we run them.

Kosten

Cost per Intelligence Index Task

Weighted average cost (USD) per Artificial Analysis Intelligence Index task, segmented by token type. Lower is better
Reasoning models are indicated by a lightbulb icon

Weighted average cost per Intelligence Index task. Each evaluation’s cost is calculated from input, cache hit, cache write, reasoning, and answer token prices, divided by task count, and weighted by its Intelligence Index weight.

Cost to Run Artificial Analysis Intelligence Index

Cost (USD) to run all evaluations in the Artificial Analysis Intelligence Index
Reasoning models are indicated by a lightbulb icon

The cost to run the evaluations in the Artificial Analysis Intelligence Index, calculated using the model's input, cache hit, cache write, reasoning, and answer token prices and the number of tokens used across evaluations (excluding repeats).

Pricing: Cache Hit, Input, and Output

Price (USD per M Tokens)
Reasoning models are indicated by a lightbulb icon

Price per token for cached prompts (previously processed), typically offering a significant discount compared to regular input price, represented as USD per million tokens. The values shown here are the cache hit price; cache write and cache storage are billed separately and vary by provider — see "Cache pricing by provider" for detail.

Kontextfenster

Context Window

Context window: tokens limit · Higher is better
Reasoning models are indicated by a lightbulb icon

Larger context windows are relevant to RAG (Retrieval Augmented Generation) LLM workflows which typically involve reasoning and information retrieval of large amounts of data.

Maximum number of combined input & output tokens. Output tokens commonly have a significantly lower limit (varied by model).

Geschwindigkeit

Gemessen anhand der Ausgabegeschwindigkeit (Tokens pro Sekunde)

Output Speed

Output tokens per second · Higher is better
Reasoning models are indicated by a lightbulb icon

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Figures represent performance of the model's first-party API (e.g. OpenAI for o1) or the median across providers where a first-party API is not available (e.g. Meta's Llama models).

Time per Intelligence Index Task

Weighted average decode time (minutes) per task; excludes TTFT and overhead time · Lower is better
Reasoning models are indicated by a lightbulb icon

The weighted average time (seconds) per Artificial Analysis Intelligence Index task. This is calculated by dividing output tokens per task by output speed, weighted by the relative weights of each benchmark in the Intelligence Index.

Latenz

Gemessen anhand der Zeit (in Sekunden) bis zum ersten Token

Latency: Time To First Answer Token

Seconds to first answer token received · Accounts for reasoning model 'thinking' time
Reasoning models are indicated by a lightbulb icon

Time to first answer token received, in seconds, after API request sent. For reasoning models, this includes the 'thinking' time of the model before providing an answer. For models which do not support streaming, this represents time to receive the completion.

Ende-zu-Ende-Antwortzeit

Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed

End-to-End Response Time

Seconds to output 500 tokens, including reasoning model 'thinking' time · Lower is better
Reasoning models are indicated by a lightbulb icon

Seconds to receive a 500 token response. Key components:

  • Input time: Time to receive the first response token
  • Thinking time (only for reasoning models): Time reasoning models spend outputting tokens to reason prior to providing an answer. Amount of tokens based on the average reasoning tokens across a diverse set of 60 prompts (methodology details).
  • Answer time: Time to generate 500 output tokens, based on output speed

Figures represent performance of the model's first-party API (e.g. OpenAI for o1) or the median across providers where a first-party API is not available (e.g. Meta's Llama models).

Modellgröße (nur Modelle mit offenen Gewichten)

Model Size: Total and Active Parameters

Comparison between total model parameters and parameters active during inference
Reasoning models are indicated by a lightbulb icon

The total number of trainable weights and biases in the model, expressed in billions. These parameters are learned during training and determine the model's ability to process and generate responses.

The number of parameters actually executed during each inference forward pass, expressed in billions. For Mixture of Experts (MoE) models, a routing mechanism selects a subset of experts per token, resulting in fewer active than total parameters. Dense models use all parameters, so active equals total.

Häufig gestellte Fragen

Häufige Fragen zu LFM2.5-8B-A1B

LFM2.5-8B-A1B wurde am 28. Mai 2026 veröffentlicht.

LFM2.5-8B-A1B wurde von Liquid AI entwickelt.

LFM2.5-8B-A1B erzielt im Artificial Analysis Intelligence Index einen geschätzten Wert von 8 und liegt damit im Vergleich zu anderen Modellen mit offenen Gewichten ähnlicher Größe unter dem Durchschnitt (Median: 9).

LFM2.5-8B-A1B erzeugt Ausgaben mit 337.8 Tokens pro Sekunde (auf Grundlage des Medians aller Anbieter, die das Modell bereitstellen). Dies ist deutlich über dem Durchschnitt im Vergleich zu anderen Modellen mit offenen Gewichten ähnlicher Größe (Median: 98.9 Tokens/s).

LFM2.5-8B-A1B hat eine Zeit bis zum ersten Token (TTFT) von 1.55 s (auf Grundlage des Medians aller Anbieter, die das Modell bereitstellen). Dies ist besser als der Durchschnitt im Vergleich zu anderen Modellen mit offenen Gewichten ähnlicher Größe (Median: 1.98 s).

Ja, LFM2.5-8B-A1B ist ein Reasoning-Modell. Es nutzt längere Denkprozesse oder Chain-of-Thought-Reasoning, um komplexe Probleme zu bearbeiten, bevor es eine Antwort gibt.

LFM2.5-8B-A1B unterstützt Text als Eingabe.

LFM2.5-8B-A1B unterstützt Text als Ausgabe.

Nein, LFM2.5-8B-A1B unterstützt keine Bildeingaben. Es kann nur Text verarbeiten.

Nein, LFM2.5-8B-A1B ist nicht multimodal. Es unterstützt nur Text als Eingabe.

LFM2.5-8B-A1B hat ein Kontextfenster von 33k Tokens. Es bestimmt, wie viel Text und Gesprächsverlauf das Modell in einer einzelnen Anfrage verarbeiten kann.

Ja, LFM2.5-8B-A1B hat offene Gewichte. Die Modellgewichte sind öffentlich verfügbar und können zum Selbsthosten heruntergeladen werden.

LFM2.5-8B-A1B hat 8,3 Milliarden Parameter (1,5 Milliarden aktiv).

LFM2.5-8B-A1B ist ein Mixture-of-Experts-Modell (MoE) mit insgesamt 8,3 Milliarden Parametern, von denen während der Inferenz jedoch nur 1,5 Milliarden aktiv sind.

LFM2.5-8B-A1B wird unter der Lizenz lfm 1.0 veröffentlicht. Diese Lizenz erlaubt die kommerzielle Nutzung. Lizenz anzeigen

LFM2.5-8B-A1B erzielt im Artificial Analysis Intelligence Index einen Wert von 8. Dieser zusammengesetzte Benchmark bewertet Modelle in den Bereichen Schlussfolgern, Wissen, Mathematik und Programmierung.

Ja, LFM2.5-8B-A1B ist über 1 Anbieter per API verfügbar. API-Anbieter vergleichen

LFM2.5-8B-A1B ist über 1 API-Anbieter verfügbar. Anbieter vergleichen