# Cydonia 24B V4.1

> Cydonia 24B V4.1 is an open-weight language model from Thedrummer, released on 27 Sept 2025. It accepts text and generates text, with a 131K-token context window and up to 118K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.30 per million input tokens and $0.50 per million output tokens (OpenRouter), across 1 provider we track.

Source page: https://www.aimodel.directory/models/cydonia-24b-v4-1
Last verified: 4 Oct 2026

## Specifications

- **Developer:** Thedrummer
- **Release date:** 27 Sept 2025 (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Status:** Generally available
- **Weights:** Open weights (source: Hugging Face, https://huggingface.co/TheDrummer/Cydonia-24B-v4.1)
- **Parameters:** 23.6B (source: Hugging Face, https://huggingface.co/TheDrummer/Cydonia-24B-v4.1)
- **Context window:** 131K (131,072 tokens) (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Max output:** 118K tokens (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Knowledge cutoff:** 30 Apr 2024 (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Input:** Text (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Output:** Text (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Reasoning mode:** No (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Tool calling:** No (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Structured output:** Yes (source: OpenRouter, https://openrouter.ai/thedrummer/cydonia-24b-v4.1)
- **Hugging Face:** thedrummer/cydonia-24b-v4.1 (source: Hugging Face, https://huggingface.co/TheDrummer/Cydonia-24B-v4.1)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| OpenRouter | $0.30 | $0.50 | $0.15 | 131K |

## FAQ

### What is the context window of Cydonia 24B V4.1?

Cydonia 24B V4.1 has a context window of 131,072 tokens (131K) and can generate up to 117,964 tokens in a single response, according to OpenRouter.

### How much does the Cydonia 24B V4.1 API cost?

Cydonia 24B V4.1 is listed from $0.30 per million input tokens and $0.50 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.

### Is Cydonia 24B V4.1 open source?

Cydonia 24B V4.1 is an open-weight model: its weights are published on Hugging Face as thedrummer/cydonia-24b-v4.1. Check the license terms before commercial use.

### When was Cydonia 24B V4.1 released?

Thedrummer released Cydonia 24B V4.1 on 27 Sept 2025, according to OpenRouter.

---
Data licensed CC BY 4.0. Cite as: AI Model Directory, "Cydonia 24B V4.1", https://www.aimodel.directory/models/cydonia-24b-v4-1