GPT-4.5 vs LFM3-1.7B
LFM3-1.7B leads the LLM Stats Score 25.0 to 19.5.
OpenAI · Liquid AI · Updated for 2026
Which is better?
LFM3-1.7B leads the overall LLM Stats Score 25.0 to 19.5, ranking #192 overall.
In the 4 individual benchmarks reported for both models, LFM3-1.7B wins 3; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-4.5
- you want predictable pricing at $75.00/M input and $150.00/M output
Choose LFM3-1.7B
- overall performance matters — it scores 25.0 and ranks #192 on LLM Stats
- you value its reported benchmark strengths — it wins 3 of 4 exact shared results
- you want the most recent training data — it shipped Oct 2026
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
26 reported for GPT-4.5 · 20 for LFM3-1.7B
GPT-4.5 outperforms in 1 benchmarks (GPQA), while LFM3-1.7B is better at 3 benchmarks (IFEval, Multi-IF, SWE-Bench Verified).
LFM3-1.7B shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only GPT-4.5 specifies input context (128,000 tokens). Only GPT-4.5 specifies output context (4,096 tokens).
Input capabilities
Documented input modalities across available providers
GPT-4.5 supports multimodal inputs, whereas LFM3-1.7B does not.
GPT-4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-4.5
LFM3-1.7B
License
Usage and distribution terms
GPT-4.5 is licensed under a proprietary license, while LFM3-1.7B uses LFM Open License v1.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
LFM Open License v1.0
Open weights
Release Timeline
When each model was launched
GPT-4.5 was released on 2025-02-27, while LFM3-1.7B was released on 2026-10-27.
LFM3-1.7B is 20 months newer than GPT-4.5.
Feb 27, 2025
1.7 years ago
Oct 27, 2026
5 days ago
1.7yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-4.5 and LFM3-1.7B side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-4.5 vs LFM3-1.7B.