DeepSeek V4.1 Flash Thinking

DeepSeek V4.1 Flash 1017

The October 17, 2026 snapshot of DeepSeek V4.1 Flash supports text and image input, tool calling, and optional reasoning with low, high, and max effort. It has a shared 1,048,576-token context window and supports up to 393,216 output tokens within the remaining context. Zero data retention is available on eligible routes; output limits and reasoning levels depend on the selected route. Released under the MIT license.

DeepSeek V4.1 Flash 1017 Thinking

The October 17, 2026 snapshot of DeepSeek V4.1 Flash supports text and image input, tool calling, and optional reasoning with low, high, and max effort. It has a shared 1,048,576-token context window and supports up to 393,216 output tokens within the remaining context. Zero data retention is available on eligible routes; output limits and reasoning levels depend on the selected route. Released under the MIT license.

DeepSeek V4 Flash 0423

The original 0423 checkpoint of DeepSeek V4 Flash, with a 1M-token context window, text input, tool calling, structured output, and optional reasoning.

DeepSeek V4 Flash 0423 (Thinking)

The original 0423 checkpoint of DeepSeek V4 Flash, with a 1M-token context window, text input, tool calling, structured output, and optional reasoning.

DeepSeek V4.1 Flash

DeepSeek V4.1 Flash supports text and image input, reasoning, tool calling, and structured output with a 1M-token context window. This is a rate-limited beta with limited capacity, intended for testing rather than production use.

DeepSeek V4 Flash Vision Exp

An experimental vision-enabled DeepSeek V4 Flash model that adds image understanding while retaining the text, reasoning, coding, tool-calling, and agent capabilities of the base model.