Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M

liquid

ReasoningAUTO PROFILELIVE INDEX

LiquidAI: LFM2.5-1.2B-Thinking (free)

Name: LiquidAI: LFM2.5-1.2B-Thinking (free)
Brand: liquid

text->text

LiquidAI: LFM2.5-1.2B-Thinking (free) is a reasoning-tuned model: optimised for chain-of-thought, mathematics, and step-by-step problem solving rather than chat throughput. Available via liquid. 33K-token context. Free tier on OpenRouter. Routed through OpenRouter's free tier — capacity is best-effort.

LiquidAI: LFM2.5-1.2B-Thinking (free) is a reasoning AI model from liquid. It costs $0.000 per million input tokens and $0.000 per million output tokens (blended $0.000/M), with a 33K-token context window.

Modalities textPricing source ↗Compare with another model →Estimate monthly cost →

INPUT

$0.000/M

per million input tokens

OUTPUT

$0.000/M

per million output tokens

BLENDED 70/30

$0.000/M

default reference rate · how it's calculated →

CONTEXT

33K

32,768 tokens

What it's good at

Step-by-step reasoning traces
Mathematics and proofs
Code synthesis with planning
Robust on multi-step problems

Typical use cases

Math problem solving
Hard coding tasks
Research-grade Q&A
Multi-step planning

Benchmarks

No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.

How much does LiquidAI: LFM2.5-1.2B-Thinking (free) cost?

LiquidAI: LFM2.5-1.2B-Thinking (free) costs $0.000 per million input tokens and $0.000 per million output tokens, for a blended reference rate of $0.000 per million tokens.

What is LiquidAI: LFM2.5-1.2B-Thinking (free)'s context window?

LiquidAI: LFM2.5-1.2B-Thinking (free) supports up to 33K tokens of context (32,768 tokens).

What is LiquidAI: LFM2.5-1.2B-Thinking (free) best for?

LiquidAI: LFM2.5-1.2B-Thinking (free) is well suited to Step-by-step reasoning traces, Mathematics and proofs and Code synthesis with planning.

Who makes LiquidAI: LFM2.5-1.2B-Thinking (free)?

LiquidAI: LFM2.5-1.2B-Thinking (free) is developed and served by liquid.