Apertus 70B
Fully open 70B multilingual LLM supporting 1800+ languages with 65K context. Trained on 15T tokens of compliant open data. Apache 2.0, EU AI Act compliant.
- Capability
- —No ECI score yet
- Input
- $0.82per 1M tokens
- Output
- $2.42per 1M tokens
- Context
- 66K8K max output
What it costs
- Input
- $0.82per million tokens
- Output
- $2.42per million tokens
- Blended (3:1)
- $1.22pricier than 60% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $2.85 |
| Team assistant25M input + 5M output tokens | $32.60 |
| Production app250M input + 50M output tokens | $326.00 |
Median of 3 paid API providers on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Apertus 70B yet.
The details
- Lab
- Swiss AI
- Released
- Sep 2, 2025
- Knowledge cutoff
- Sep 2025
- Context window
- 65,536 tokens
- Max output
- 8,192 tokens
- Inputs
- Text
- Output
- Text
- Reasoning
- No
- Tool calling
- Yes
- Structured output
- No
- Weights
- Open weights · Apache-2.0
- Availability
- 3 API providerslisted on models.dev
More from Swiss AI
About Apertus 70B
How much does Apertus 70B cost?
Apertus 70B costs $0.82 input / $2.42 output per million tokens (median across 3 API providers). At a 3:1 input-to-output mix that is $1.22 per million tokens, more expensive than 60% of the 360 priced models we track.
What is the context window of Apertus 70B?
Apertus 70B accepts up to 65,536 tokens per request and can write up to 8,192 tokens in one response.
How good is Apertus 70B?
Epoch AI has not published a Capabilities Index score for Apertus 70B yet.
Is Apertus 70B open source?
Yes. Swiss AI publishes the weights under the Apache-2.0 licence, so it can be downloaded and self-hosted.
What inputs does Apertus 70B support?
Apertus 70B accepts text and replies in text. It is not a dedicated reasoning model, supports tool calling.
When was Apertus 70B released?
Swiss AI released Apertus 70B on Sep 2, 2025. Its training data runs to Sep 2025.
What are the best alternatives to Apertus 70B?
The closest current models from other labs on capability, price and release date are Qwen3 VL 235B A22B Thinking (Alibaba (Qwen), $0.40 / $4.00), GLM-4.6 (Z.ai (Zhipu), $0.60 / $2.20), Ling-1T (inclusionAI, $0.57 / $2.29) and Mistral Medium 3.1 (Mistral AI, $0.40 / $2.00).