EZ
ETH Zurich
Language model · Switzerland ·Sep 2025

Apertus 8B

Language Open (Restricted)
8B
Parameters

About Apertus 8B

Apertus 8B is an AI model developed by ETH Zurich, in the language category, released in 2025, made available as an open-weights model with 8B params.

On this page you'll find Apertus 8B's full specifications. Review provider pricing and benchmark scores below, or compare Apertus 8B head-to-head with other language models.

→ More models by ETH Zurich → All language models → AI benchmarks leaderboard

Links

Announcement ↗ Hugging Face ↗

Run Apertus 8B locally — what to buy

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Sized to what Apertus 8B actually needs (~8k context at Q4), not to the biggest GPU: Good = cheapest that runs it, Better = best value, Best = most headroom. Speed is a hardware estimate; anything past ~120 tok/s is shown as instant.

Good
Intel Arc B580 12GB
Consumer GPU · ~$249
~73.3 tok/s
Q4 · fits full context · up to 8k ctx
Runs with: ExLlamaV2, KoboldCpp, LM Studio
See full estimate →
Better
Intel Arc A770 16GB
Consumer GPU · ~$329
~90 tok/s
Q4 · fits full context · up to 8k ctx
Runs with: ExLlamaV2, KoboldCpp, LM Studio
See full estimate →
Best
NVIDIA GeForce RTX 5070
Consumer GPU · ~$549
~120 tok/s
Q4 · fits full context · up to 8k ctx
Runs with: ExLlamaV2, KoboldCpp, LM Studio
See full estimate →

Software support

·ExLlamaV2 ·KoboldCpp ·LM Studio ·MLX ·Ollama ·SGLang ·TensorRT-LLM ·llama.cpp ·vLLM ?KTransformers ?text-generation-webui

✓ measured · · compatible · — not supported. Informational only — speed is hardware-based.

Consumer GPU
36–120+ tok/s
32 options →
Apple
21.8–120+ tok/s
18 options →
Datacenter GPU
120+ tok/s
13 options →

Community

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Frequently asked questions

What is Apertus 8B? ▶

Apertus 8B is an AI model developed by ETH Zurich, in the language category, released in 2025. It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created Apertus 8B? ▶

Apertus 8B was developed by ETH Zurich and released in 2025.

Is Apertus 8B open source or proprietary? ▶

Apertus 8B ships as an open-weights model: you can download and self-host the weights, though the licence may place some restrictions on use.

How much does Apertus 8B cost? ▶

Pricing for Apertus 8B depends on the provider. See the providers table on this page for the latest API rates.

How does Apertus 8B perform on benchmarks? ▶

Benchmark scores for Apertus 8B are listed on this page as they are published. You can compare it head-to-head with other models on the GenAIList compare tool.

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