GPT-6.1 Sol vs LFM2.5-VL-3B: Specs & Benchmark Comparison
GPT-6.1 Sol is developed by OpenAI, while LFM2.5-VL-3B comes from Liquid AI. LFM2.5-VL-3B was released in August 2026, and GPT-6.1 Sol followed a month later in September 2026. LFM2.5-VL-3B has a published size of about 3 billion parameters; OpenAI has not disclosed the parameter count of GPT-6.1 Sol.
We have 17 benchmark results for GPT-6.1 Sol and 23 benchmark results for LFM2.5-VL-3B, but they overlap on a single test: MMMU-Pro, where GPT-6.1 Sol scores 86.0% against 30.5%.
GPT-6.1 Sol is available through an API at $2 per million input tokens with a 1M-token context window. We do not track a hosted API for LFM2.5-VL-3B, so pricing and context cannot be compared directly.
| Characteristic | GPT-6.1 Sol | LFM2.5-VL-3B |
|---|---|---|
| Company | OpenAI | Liquid AI |
| Release Date | September 29, 2026 | August 12, 2026 |
| Parameters | — | 3B |
| Multimodal | Yes | Yes |
| Context (input) | 1.1M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $2.00 | — |
| Output Price / 1M | $10.00 | — |
| Average Score | 62.8% | 63.7% |
| Benchmarks | ||
| MMMU-Pro | 86.0% | 30.5% |
Visual Benchmark Comparison
Verdict
GPT-6.1 Sol leads in 1 out of 2 comparison categories.
Both models show comparable average scores: GPT-6.1 Sol — 0.6, LFM2.5-VL-3B — 0.6.
GPT-6.1 Sol is newer: released 9/29/2026 vs 8/12/2026.
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Frequently Asked Questions
Which is better for coding — GPT-6.1 Sol or LFM2.5-VL-3B?
Which model is cheaper — GPT-6.1 Sol or LFM2.5-VL-3B?
Which has a larger context window — GPT-6.1 Sol or LFM2.5-VL-3B?
The GPT-6.1 Sol and LFM2.5-VL-3B comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-6.1 Sol or LFM2.5-VL-3B page. See also the complete list of AI model comparisons.