# Perplexity — DeepSeek V4 Flash 0731

- Company: Perplexity (perplexity.ai)
- Announced: 2026-08-27T17:10:21+00:00
- Category: new-model
- Subject: Sonar
- Models affected: perplexity/deepseek-v4-flash-0731
- Context window: 1M-token context window
- Source: https://docs.perplexity.ai/docs/resources/changelog#august-2026
- Record: https://forck.live/items/5063-deepseek-v4-flash-0731

Perplexity announced support for the new model perplexity/deepseek-v4-flash-0731 in its Agent API and Router API, describing it as a fast, efficient open reasoning model with a 1M-token context window.

## Evidence

Verbatim from https://docs.perplexity.ai/docs/resources/changelog#august-2026:

> The Agent API and Router API now support perplexity/deepseek-v4-flash-0731, a fast, efficient open reasoning model with a 1M-token context window.

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Record: https://forck.live/items/5063-deepseek-v4-flash-0731
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