LFM2 1.2B vs LFM2.5 1.2B Instruct
Humanity's Last Exam Humanity's Last Exam: Very hard expert questions across many fields, written to stump today’s models
LFM2 1.2B5.6
LFM2.5 1.2B Instruct6.7
| Benchmark | LFM2 1.2B | LFM2.5 1.2B Instruct |
|---|---|---|
| Humanity's Last Exam | 5.6 | 6.7 |
Specs
| Spec | LFM2 1.2B | LFM2.5 1.2B Instruct |
|---|---|---|
| Context | 33K | 33K |
| Weights | Open | Open |
| Released | Jul 2025 | Jan 2026 |
| Memory (4-bit) | 0.6 GB | 0.6 GB |
| Licence | lfm1.0 | lfm1.0 |
| Commercial use | Restricted | Restricted |
| See images | — | — |
| Read PDFs | ? | ? |
| Hear audio | — | — |
| Watch video | — | — |
| Call tools | ✓ | ✓ |
| Force a tool call | ? | ? |
| Return strict JSON | Partial | Partial |
| Search the web | ? | ? |
| Run code | ? | ? |
| Use a computer | ? | ? |
What breaks when you switch
LFM2 1.2B → LFM2.5 1.2B Instruct
Nothing known.
LFM2.5 1.2B Instruct → LFM2 1.2B
Nothing known.