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Claude Sonnet 4.6 vs LFM2.5-VL-3B

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Anthropic · Liquid AI · Updated for 2026

Which is better?

Claude Sonnet 4.6 outperforms in 1 benchmarks (MMMU-Pro), while LFM2.5-VL-3B is better at 0 benchmarks. Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Claude Sonnet 4.6

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks

Choose LFM2.5-VL-3B

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

At a glance

The differences that matter most.

Claude Sonnet 4.6
Anthropic
LFM2.5-VL-3B
Liquid AI
Benchmark wins
1 of 1
0 of 1
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
200,000
—
Released
Feb 2026
Aug 2026
License
Proprietary
LFM Open License v1.0

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Sonnet 4.6 outperforms in 1 benchmarks (MMMU-Pro), while LFM2.5-VL-3B is better at 0 benchmarks.

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Mon Aug 24 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only Claude Sonnet 4.6 specifies input context (200,000 tokens). Only Claude Sonnet 4.6 specifies output context (64,000 tokens).

Anthropic
Claude Sonnet 4.6
Input200,000 tokens
Output64,000 tokens
Liquid AI
LFM2.5-VL-3B
Input- tokens
Output- tokens
Mon Aug 24 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Sonnet 4.6 and LFM2.5-VL-3B support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Sonnet 4.6

Text
Images
Audio
Video

LFM2.5-VL-3B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Sonnet 4.6 is licensed under a proprietary license, while LFM2.5-VL-3B uses LFM Open License v1.0.

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

Claude Sonnet 4.6

Proprietary

Closed source

LFM2.5-VL-3B

LFM Open License v1.0

Open weights

Release Timeline

When each model was launched

Claude Sonnet 4.6 was released on 2026-02-17, while LFM2.5-VL-3B was released on 2026-08-12.

LFM2.5-VL-3B is 6 months newer than Claude Sonnet 4.6.

Claude Sonnet 4.6

Feb 17, 2026

6 months ago

LFM2.5-VL-3B

Aug 12, 2026

1 weeks ago

5mo newer

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?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Sonnet 4.6 and LFM2.5-VL-3B side-by-side, then vote on the output you prefer.

Claude Sonnet 4.6
✓ Preferred
LFM2.5-VL-3B
Open in Playground

FAQ

Common questions about Claude Sonnet 4.6 vs LFM2.5-VL-3B.

Which is better, Claude Sonnet 4.6 or LFM2.5-VL-3B?

Claude Sonnet 4.6 significantly outperforms across most benchmarks. Claude Sonnet 4.6 is made by Anthropic and LFM2.5-VL-3B is made by Liquid AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Sonnet 4.6 compare to LFM2.5-VL-3B in benchmarks?

Claude Sonnet 4.6 scores Tau2 Telecom: 97.9%, Tau2 Retail: 91.7%, GPQA: 89.9%, MMMLU: 89.3%, SWE-Bench Verified: 79.6%. LFM2.5-VL-3B scores DocVQA: 91.1%, POPE: 88.7%, RefCOCO-avg: 87.9%, TextVQA: 84.3%, OCRBench: 84.2%.

What are the context window sizes for Claude Sonnet 4.6 and LFM2.5-VL-3B?

Claude Sonnet 4.6 supports 200K tokens and LFM2.5-VL-3B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Sonnet 4.6 and LFM2.5-VL-3B?

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

Who makes Claude Sonnet 4.6 and LFM2.5-VL-3B?

Claude Sonnet 4.6 is developed by Anthropic and LFM2.5-VL-3B is developed by Liquid AI.

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