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LFM3-1.7B vs Solar Pro 4

Solar Pro 4 leads the LLM Stats Score 34.0 to 25.0.

Liquid AI · Upstage · Updated for 2026

Which is better?

Solar Pro 4 leads the overall LLM Stats Score 34.0 to 25.0, ranking #119 overall.

In the 4 individual benchmarks reported for both models, Solar Pro 4 wins 4; 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 LFM3-1.7B

  • you want the most recent training data — it shipped Oct 2026
  • you need open weights you can self-host or fine-tune

Choose Solar Pro 4

  • overall performance matters — it scores 34.0 and ranks #119 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 4 of 4 exact shared results

At a glance

The differences that matter most.

LFM3-1.7B
Liquid AI
Solar Pro 4
Upstage
Core performance indexes
LLM Stats Score
25.0
#191
34.0
#119
Reasoning
20.8
#216
33.6
#117
Coding
7.4
#218
20.5
#122
Agents
18.1
#97
10.7
#146
Cost, coverage & limits
Benchmark wins
0 of 4
4 of 4
Input price
— / M
$0.30 / M
Output price
— / M
$1.20 / M
Context window
—
524,288

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
LFM3-1.7B
Solar Pro 4
Math
7.6#285
32.1#68
Tool use
14.3#119
9.1#161
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

20 reported for LFM3-1.7B · 9 for Solar Pro 4

4 shared

LFM3-1.7B outperforms in 0 benchmarks, while Solar Pro 4 is better at 4 benchmarks (AA-LCR, GPQA, SWE-Bench Verified, Terminal-Bench 2.1).

Solar Pro 4 significantly outperforms across most benchmarks.

Thu Nov 05 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Solar Pro 4 specifies input context (524,288 tokens). Only Solar Pro 4 specifies output context (131,072 tokens).

Liquid AI
LFM3-1.7B
Input- tokens
Output- tokens
Upstage
Solar Pro 4
Input524,288 tokens
Output131,072 tokens
Thu Nov 05 2026 • llm-stats.com

License

Usage and distribution terms

LFM3-1.7B is licensed under LFM Open License v1.0, while Solar Pro 4 uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

LFM3-1.7B

LFM Open License v1.0

Open weights

Solar Pro 4

Proprietary

Closed source

Release Timeline

When each model was launched

LFM3-1.7B was released on 2026-10-27, while Solar Pro 4 was released on 2026-08-06.

LFM3-1.7B is 3 months newer than Solar Pro 4.

LFM3-1.7B

Oct 27, 2026

1 weeks ago

2mo newer
Solar Pro 4

Aug 6, 2026

3 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against LFM3-1.7B and Solar Pro 4 side-by-side, then vote on the output you prefer.

LFM3-1.7B
✓ Preferred
Solar Pro 4
Open in Playground

FAQ

Common questions about LFM3-1.7B vs Solar Pro 4.

Which is better, LFM3-1.7B or Solar Pro 4?

Solar Pro 4 leads the LLM Stats Score 34.0 to 25.0. LFM3-1.7B is made by Liquid AI and Solar Pro 4 is made by Upstage. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does LFM3-1.7B compare to Solar Pro 4 in benchmarks?

LFM3-1.7B scores IFEval: 96.7%, Multi-IF: 89.1%, LiveCodeBench v6: 73.5%, IFBench: 73.0%, BFCL-V4: 71.4%. Solar Pro 4 scores AIME 2026: 95.3%, GPQA: 89.0%, LiveCodeBench: 87.8%, MMLU-Pro: 86.3%, AA-LCR: 71.0%.

What are the context window sizes for LFM3-1.7B and Solar Pro 4?

LFM3-1.7B supports an unknown number of tokens and Solar Pro 4 supports 524K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between LFM3-1.7B and Solar Pro 4?

Key differences include LLM Stats Score (25.0 vs 34.0), licensing (LFM Open License v1.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes LFM3-1.7B and Solar Pro 4?

LFM3-1.7B is developed by Liquid AI and Solar Pro 4 is developed by Upstage.

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