alltheai.tools
DeepSeek logo

DeepSeek

Chat assistant and API for text, reasoning and image understanding

AI ChatbotsResearched, not tested
AlternativesFull pricing
Pricing
freemium
From
See site
Free tier
Yes

What we think

Not rated yet

What readers think

Not rated yet

Best for

Developers who want a pay-per-token API with long context and tool calling, and individuals who want a free chat assistant.

What it is

DeepSeek is a chat assistant and API platform from Hangzhou DeepSeek AI. The web and mobile apps let people hold conversations with the model, and the API platform gives developers access to the same models for building applications. The current models are DeepSeek-V4.1-Flash, which handles text, agent tasks and image understanding, and DeepSeek-V4-Pro-0813, which handles text and agent tasks but not images.

Best forDevelopers who want a pay-per-token API with long context and tool calling, and individuals who want a free chat assistant.

Features

  • Conversational assistant

    Web and mobile apps for chatting with DeepSeek, with deep thinking and smart search options.

  • Text and agent API

    API access to DeepSeek-V4.1-Flash and DeepSeek-V4-Pro-0813 for text generation and agent tasks.

  • Image understanding

    DeepSeek-V4.1-Flash accepts image input; DeepSeek-V4-Pro-0813 does not.

  • Long context

    Both API models support a 1M token context length and up to 384K output tokens.

  • Thinking mode

    Both models support non-thinking and thinking modes, with thinking as the default.

  • Tool calls and JSON output

    Both models support tool calls and JSON output for structured responses.

  • OpenAI and Anthropic compatible APIs

    Base URLs are provided for OpenAI-format and Anthropic-format requests.

  • FIM completion (beta)

    Fill-in-the-middle completion is available in non-thinking mode only.

TL;DR

DeepSeek offers a conversational assistant plus a pay-per-token API for its V4.1-Flash and V4-Pro models.

Pros

  • •Free web and mobile chat apps are listed alongside the paid API.
  • •Both API models support a 1M token context window and up to 384K output tokens.
  • •Off-peak API pricing is half the peak rate.
  • •OpenAI-format and Anthropic-format base URLs are both provided.
  • •DeepSeek-V4.1-Flash accepts image input.

Cons

  • •API prices are published in Chinese yuan, not USD.
  • •DeepSeek-V4-Pro-0813 does not support image understanding.
  • •FIM completion is limited to non-thinking mode.
  • •Concurrency is capped at 2,500 for flash and 500 for v4-pro.

The link above may earn us a commission. We earn it whether we praised the tool or not, which is why nothing on this page moves for it.