# DeepSeek Chat

> DeepSeek Chat is an open-weight language model from DeepSeek, released on 1 Dec 2025. It accepts text and generates text, with a 164K-token context window and up to 16K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.26 per million input tokens and $1.03 per million output tokens (OpenRouter), across 1 provider we track.

Source page: https://www.aimodel.directory/models/deepseek-chat
Last verified: 4 Oct 2026

## Specifications

- **Developer:** DeepSeek
- **Release date:** 1 Dec 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Weights:** Open weights (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Context window:** 164K (163,840 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Max output:** 16K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Knowledge cutoff:** Sept 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Input:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Reasoning mode:** No (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Structured output:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/deepseek/deepseek-chat.toml)
- **Hugging Face:** deepseek-ai/DeepSeek-V3

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| OpenRouter | $0.26 | $1.03 | – | 128K |

## FAQ

### What is the context window of DeepSeek Chat?

DeepSeek Chat has a context window of 163,840 tokens (164K) and can generate up to 16,000 tokens in a single response, according to models.dev.

### How much does the DeepSeek Chat API cost?

DeepSeek Chat is listed from $0.26 per million input tokens and $1.03 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.

### Is DeepSeek Chat open source?

DeepSeek Chat is an open-weight model: its weights are published on Hugging Face as deepseek-ai/DeepSeek-V3. Check the license terms before commercial use.

### When was DeepSeek Chat released?

DeepSeek released DeepSeek Chat on 1 Dec 2025, according to models.dev.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "DeepSeek Chat", https://www.aimodel.directory/models/deepseek-chat