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DeepSeek vs Undermind

Features, pricing, ratings, and pros and cons, side by side.

Undermind logo

Undermind

AI research assistant that searches, reads and cites scientific papers for literature reviews

Freemium
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Verdict

DeepSeek and Undermind are both AI Assistants tools. DeepSeek scores higher in FinderAtlas's editorial review (8.8 vs 7.7 out of 10). Both have a free plan or trial. Only DeepSeek is available on Windows, macOS and iOS and offers an API.

Best overall

DeepSeek

  • Software developers
  • Researchers and analysts
  • Students
  • AI engineers

Choose DeepSeek if

  • You want a tool built for Low-cost API integration.
  • Web chat and mobile apps are free.
  • API output costs from $0.60 per 1M tokens (Flash, off-peak), well below most frontier providers.

Choose Undermind if

  • You want a tool built for deep literature reviews, finding hard-to-surface papers on a niche topic, and tracking new publications in a field.
  • Built specifically for scientific literature, with citation-following and full-text reading.
  • In-line citations let users trace claims to source papers.
Best for beginners
DeepSeek
Best for business
Undermind

Features

18 features compared.

  • V4 model family
    DeepSeek
    Available
    Undermind
    Not available
  • Thinking mode
    DeepSeek
    Available
    Undermind
    Not available
  • Open weights
    DeepSeek
    Available
    Undermind
    Not available
  • OpenAI and Anthropic compatible API
    DeepSeek
    Available
    Undermind
    Not available
  • Tool calls and JSON output
    DeepSeek
    Available
    Undermind
    Not available
  • Search and Fetch APIs
    DeepSeek
    Available
    Undermind
    Not available
  • Agent tool integrations
    DeepSeek
    Available
    Undermind
    Not available
  • DeepSeek Harness
    DeepSeek
    Available
    Undermind
    Not available
  • Vision on Flash
    DeepSeek
    Available
    Undermind
    Not available
  • Conversational Deep Search
    DeepSeek
    Not available
    Undermind
    Available
  • Citation Trail Following
    DeepSeek
    Not available
    Undermind
    Available
  • Cited Reports
    DeepSeek
    Not available
    Undermind
    Available
  • Full-Text Analysis
    DeepSeek
    Not available
    Undermind
    Available
  • Custom Tables
    DeepSeek
    Not available
    Undermind
    Available
  • Relevance Sorting and Filtering
    DeepSeek
    Not available
    Undermind
    Available
  • New Paper Alerts
    DeepSeek
    Not available
    Undermind
    Available
  • Workspaces and Libraries
    DeepSeek
    Not available
    Undermind
    Available
  • Agent Connections
    DeepSeek
    Not available
    Undermind
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    DeepSeek
    Freemium
    Undermind
    Freemium
  • Free plan
    DeepSeek
    Yes
    Undermind
    Yes
  • Starting price
    DeepSeek
    $0
    Undermind
    $0
  • Plans
    DeepSeek
    3 plans
    Undermind
    4 plans

DeepSeek plans

  • Chat and App

    Most popular

    $0

    Free access to DeepSeek models on web, iOS and Android

    • Web chat
    • iOS and Android apps
    • Thinking mode
    • Web search
    • File upload

  • API: deepseek-flash

    $0.15/1M input tokens

    Pay as you go; $0.15 cache-miss input and $0.60 output per 1M tokens off-peak, double at peak

    • 1M context
    • 384K max output
    • Vision
    • Tool calls
    • JSON output

  • API: deepseek-v4-pro

    $0.66/1M input tokens

    Pay as you go; $0.66 cache-miss input and $1.98 output per 1M tokens off-peak, double at peak

    • 1M context
    • 384K max output
    • Tool calls
    • JSON output

Undermind plans

  • Free

    $0

    Exploratory research with standard usage limits

    • Chat
    • deep searches and reports
    • shared workspaces
    • connect external agents
    • standard usage limits

  • Pro

    Most popular

    $16/month

    Ongoing, serious research

    • Everything in Free
    • newest AI models
    • deeper full-text analysis
    • 10x higher usage limits than Free
    • unlimited workspaces
    • files and paper libraries

  • Team

    $15/user/mo

    Research groups that need shared administration

    • Everything in Pro
    • team member management
    • priority support
    • centralized billing

  • Enterprise

    Custom/custom

    Organizations with security and compliance needs

    • Everything in Team
    • increased compute
    • organization-wide login
    • onboarding seminars
    • admin dashboard
    • custom terms
    • SLA and security review
    • dedicated support

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

DeepSeek
8.8overall
Undermind
7.7overall

DeepSeek leads in 0 categories and Undermind in 0, with 1 tied.

  • Reasoning & Logic

    DeepSeek
    8.8
    Undermind
    Not rated

  • Coding & Syntax

    DeepSeek
    8.7
    Undermind
    Not rated

  • Cost Efficiency

    DeepSeek
    9.6
    Undermind
    Not rated

  • Long Context

    DeepSeek
    8.8
    Undermind
    Not rated

  • Ease of Use

    Tied
    DeepSeek
    8.0
    Undermind
    8.0

  • Feature Depth

    DeepSeek
    Not rated
    Undermind
    8.2

  • Value for Money

    DeepSeek
    Not rated
    Undermind
    7.8

  • Performance & Speed

    DeepSeek
    Not rated
    Undermind
    7.5

  • Documentation & Support

    DeepSeek
    Not rated
    Undermind
    7.0

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

DeepSeek

Pros

  • Web chat and mobile apps are free
  • API output costs from $0.60 per 1M tokens (Flash, off-peak), well below most frontier providers
  • Open weights for V4 and earlier models on Hugging Face
  • 1M-token context and 384K max output on both API models
  • API works with both OpenAI and Anthropic SDKs and several coding agents

Cons

  • Peak-hour API rates are double the off-peak rates on weekday mornings UTC
  • deepseek-v4-pro does not support vision input
  • No image generation
  • Data is processed by a company based in China, which some organizations cannot accept

Undermind

Pros

  • Built specifically for scientific literature, with citation-following and full-text reading.
  • In-line citations let users trace claims to source papers.
  • Free tier available, with paid Pro at $16 per month billed annually.
  • Alerts and libraries support ongoing tracking of a field, not just one-off searches.
  • Can be connected to Claude, ChatGPT and other agents.

Cons

  • Exact usage limits are not published; Pro is only described as 10x Free.
  • Not designed for general web research, news or non-technical topics.
  • Web-only; no iOS or Android app was found.
  • Published benchmark results are vendor-reported.

Platforms

  • Web
    DeepSeek
    Supported
    Undermind
    Supported
  • Windows
    DeepSeek
    Supported
    Undermind
    Not supported
  • macOS
    DeepSeek
    Supported
    Undermind
    Not supported
  • iOS
    DeepSeek
    Supported
    Undermind
    Not supported
  • Android
    DeepSeek
    Supported
    Undermind
    Not supported
  • API
    DeepSeek
    Supported
    Undermind
    Not supported
  • Browser Extension
    DeepSeek
    Not supported
    Undermind
    Not supported

Integrations

DeepSeek

6 integrations
  • OpenAI SDK
  • Anthropic SDK
  • Claude Code
  • Codex
  • OpenCode
  • Hugging Face

Undermind

2 integrations
  • Claude
  • ChatGPT

Company

  • Company
    DeepSeek
    DeepSeek
    Undermind
    Undermind
  • Founded
    DeepSeek
    2023
    Undermind
    Not listed
  • Headquarters
    DeepSeek
    Hangzhou, China
    Undermind
    Not listed
  • Listing
    DeepSeek
    Claimed
    Undermind
    Claimed

Frequently asked questions

Is DeepSeek better than Undermind?

It depends on your workflow. DeepSeek is built for Low-cost API integration. Undermind is built for deep literature reviews, finding hard-to-surface papers on a niche topic, and tracking new publications in a field.

What are the key feature differences between DeepSeek and Undermind?

DeepSeek: Free AI chat app and low-cost API running DeepSeek's open-weights V4 models. Undermind: AI research assistant that searches, reads and cites scientific papers for literature reviews.

Does DeepSeek or Undermind have a free plan?

Yes, both do. DeepSeek is freemium and Undermind is freemium, and each has a free plan or trial.

Which is cheaper, DeepSeek or Undermind?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.