Model record
Apertus 70B Instruct 2509 model overview
Apertus 70B Instruct 2509 is a open weights model from Swiss AI Initiative. It was released on September 2, 2025. Its strongest case is open artifacts, while buyers should account for no model-specific price.
Apertus 70B Instruct 2509 benchmark snapshot
| Evaluation | Reported score | What it probes |
|---|---|---|
| MMLU-Pro | Not reported | Broad knowledge and multi-step reasoning |
| GPQA Diamond | Not reported | Graduate-level science reasoning |
| SWE-bench Verified | Not reported | Verified real-repository issue resolution |
| LiveCodeBench | Not reported | Contamination-aware competitive programming |
| SWE-Bench Pro | Not reported | Longer, harder professional software tasks |
| Artificial Analysis Intelligence Index | Not reported | Composite third-party capability index; version matters |
Scores are percentages reported by model creators or benchmark maintainers under varying settings. A blank is preferable to an inferred result. See our methodology.
Apertus 70B Instruct 2509 strengths
- Open artifacts
- Apache license
Apertus 70B Instruct 2509 limitations
- No model-specific price
- Joint attribution does not fit one company cleanly
Editorial take: Benchmark rank should narrow a shortlist, not close a purchase. Run a private evaluation with representative prompts, failure cases, latency targets, and total token costs.
Source record
Specifications and scores are linked to the best source located during review. Provider-reported results are not presented as third-party lab reproductions.
Source limitation: Official model card: https://huggingface.co/swiss-ai/Apertus-70B-Instruct-2509
Read EPFL/ETH Zurich/CSCS Apertus joint release ↗