Model comparison
LFM2.5-24B-A2B vs Solar Pro 4
- Input
- $0.10
- Output
- $1.00
- Context
- 128K
- Released
- 2026-10-13
- Input
- $0.30
- Output
- $1.20
- Context
- 512K tokens
- Released
- 2026-08-06
Solar Pro 4 scores higher on 2 of the 2 benchmarks both models report; LFM2.5-24B-A2B is cheaper on input tokens ($0.1 vs $0.3 per 1M, 3×); Solar Pro 4 has the larger context window (512K vs 128K); LFM2.5-24B-A2B ships open weights while Solar Pro 4 is API-only.
Specs and pricing side by side
| Spec | LFM2.5-24B-A2B | Solar Pro 4 |
|---|---|---|
| Maker | Liquid AI | Upstage |
| Released | 2026-10-13 | 2026-08-06 |
| Context window | 128K | 512K tokens |
| Max output | not published | 128K tokens |
| Input price | $0.10 | $0.30 |
| Output price | $1.00 | $1.20 |
| Parameters | 24.0B total · 2.45B active | Undisclosed |
| License | LFM Open License v1.0 | Proprietary (Upstage API and on-premises) |
| Weights | Open weights | API only |
| Modalities | Text | Textsame |
| Knowledge cutoff | not published | February 2026 |
Benchmarks both models report
| Benchmark | LFM2.5-24B-A2B | Solar Pro 4 |
|---|---|---|
| GPQA Diamond | 74.42% | 89% |
| SWE-Bench Verified | 51% | 70.6% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick LFM2.5-24B-A2B if…
- Cost matters: input tokens cost 3× less ($0.1 vs $0.3 per 1M).
- You want to self-host or fine-tune (open weights, LFM Open License v1.0).
- Your use case is: running a private coding or personal agent locally on a Mac or AMD laptop through an OpenAI-compatible server and a harness such as Hermes, OpenClaw or Pi.
Pick Solar Pro 4 if…
- You care about GPQA Diamond, SWE-Bench Verified (it scores higher on 2 shared benchmarks).
- You need the longer context (512K vs 128K).
- Your use case is: reach for it when an agent has to work across several long documents, contracts or data files in one session.
FAQ
Which is better, LFM2.5-24B-A2B or Solar Pro 4?
Solar Pro 4 scores higher on 2 of the 2 benchmarks both models report; LFM2.5-24B-A2B is cheaper on input tokens ($0.1 vs $0.3 per 1M, 3×); Solar Pro 4 has the larger context window (512K vs 128K); LFM2.5-24B-A2B ships open weights while Solar Pro 4 is API-only. The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How much cheaper is LFM2.5-24B-A2B?
LFM2.5-24B-A2B: $0.10 input, $1.00 output. Solar Pro 4: $0.30 input, $1.20 output (list API prices as published by each maker).
What are the context windows of LFM2.5-24B-A2B and Solar Pro 4?
LFM2.5-24B-A2B offers 128K; Solar Pro 4 offers 512K tokens with up to 128K tokens output.
Is LFM2.5-24B-A2B newer than Solar Pro 4?
LFM2.5-24B-A2B was released 2026-10-13; Solar Pro 4 was released 2026-08-06.