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Machine Learning · head to head

Mistral AI vs QuillBot

Mistral AI logo

Mistral AI

Machine Learning

European AI lab with open models, API platform and Le Chat assistant

From
On request
Free plan
No
Full reviewWebsite
QuillBot logo

QuillBot

AI

AI paraphrasing and writing tool

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only QuillBot has a free tier, so it costs nothing to try first.
  • Each has a real cost: Mistral AI smaller model selection compared to OpenAI; Mistral Medium 3.5 significantly more expensive than competing mid-tier models; QuillBot free tier limited to 125-word paraphrases with only 2 modes
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Mistral AI and QuillBot actually diverge.

Attributes where Mistral AI and QuillBot differ
AttributeMistral AIQuillBot
Starting priceOn requestFree
Pricing modelusage-basedfreemium
Free tierNoYes
PlatformsWeb, API, Self-hosted, Cloud (AWS, Google Cloud, Azure, SAP, IBM, Snowflake, NVIDIA, Outscale)Web
CategoryMachine LearningAI
FoundedUnknown2017

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Mistral AI

Nothing recorded that QuillBot does not also cover.

Only in QuillBot

  • Paraphrasing
  • Grammar checking
  • Summarization
  • Citation generator
  • Browser extension
  • Microsoft Word
  • Google Docs
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Mistral AI

  • EU-regulated workloads requiring data residency outside USnot QuillBot
  • Custom model training and domain-specific fine-tuningnot QuillBot
  • Multi-modal document processing with OCRnot QuillBot
  • Autonomous development with Vibe for Codenot QuillBot

QuillBot

  • ai tools managementnot Mistral AI
  • Workflow automationnot Mistral AI
  • Reportingnot Mistral AI

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Mistral AI

  • Smaller model selection compared to OpenAI; Mistral Medium 3.5 significantly more expensive than competing mid-tier models
  • Batch processing only available at 50% discount, not free tier
  • No free tier; all API access requires payment

QuillBot

  • Free tier limited to 125-word paraphrases with only 2 modes
  • Grammar checking is less robust than Grammaly
  • Writing analytics less advanced than top-tier competitors

Pricing, plan by plan

Mistral AI

On request
  • Mistral Small 4$0.15/per million input tokens
    • Multimodal
    • Multilingual
    • Apache 2.0 license
  • Mistral Small 4 output$0.6/per million output tokens
    • Same model
  • Mistral Large 3$0.5/per million input tokens
    • General-purpose flagship
  • Mistral Large 3 output$1.5/per million output tokens
    • Same model

QuillBot

Free
  • FreeFree
    • 125 words paraphrase
    • 3 modes
  • Premium$9.95/month
    • Unlimited words
    • All modes
    • Plagiarism checker

Which should you pick?

Choose Mistral AI if

  • You work on Web, API, Self-hosted, Cloud (AWS, Google Cloud, Azure, SAP, IBM, Snowflake, NVIDIA, Outscale).
Mistral AI review

Choose QuillBot if

  • You need paraphrasing.
  • You want to start without paying.
  • You also want grammar checking.
QuillBot review

Questions people ask

Is Mistral AI or QuillBot better?
Neither clearly leads. Mistral AI starts at On request and QuillBot at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Mistral AI or QuillBot?
QuillBot has a free tier; the other does not. Paid plans start at On request for Mistral AI and Free for QuillBot.
Does Mistral AI or QuillBot run on more platforms?
Mistral AI runs on Web, API, Self-hosted, Cloud (AWS, Google Cloud, Azure, SAP, IBM, Snowflake, NVIDIA, Outscale). QuillBot runs on Web.
Can I use QuillBot for free?
Yes. QuillBot has a free tier, so you can try it without paying. Mistral AI starts at On request.
What is Mistral AI best used for?
Mistral AI is most often used for eu-regulated workloads requiring data residency outside us, custom model training and domain-specific fine-tuning, multi-modal document processing with ocr, autonomous development with vibe for code. Of those, eu-regulated workloads requiring data residency outside us and custom model training and domain-specific fine-tuning are not what QuillBot is typically brought in for.
What can Mistral AI do that QuillBot cannot?
QuillBot covers Paraphrasing, Grammar checking, Summarization, Citation generator.

Answered from the vendors’ own pages

Mistral AI: How much does Mistral AI cost?

Mistral AI offers a free plan with 10 USD/month in API credits, Pro at 14.99 USD/month with 30 USD/month in credits, and Team at 24.99 USD per user/month with a 50 USD minimum.

Source
QuillBot: What is QuillBot pricing?

QuillBot uses a freemium model. Premium costs $19.95/month or $8.33/month ($100/year) when billed annually. The free tier provides basic paraphrasing with 125-word limit and 2 modes.

Source
Mistral AI: Is there a free plan?

Yes, Mistral AI includes a free plan with 10 USD/month in API credits, Studio access, and 100+ connectors for limited use.

Source
QuillBot: What are QuillBot's paraphrasing modes?

QuillBot offers 10 specialized paraphrasing modes including Standard, Fluency, Creative, and the newly added Boomer Mode, providing unmatched flexibility at this price point.

Source
Mistral AI: What are the API costs?

API pricing is per million tokens for most models with input and output charged separately; OCR costs per 1,000 pages; speech models charged per minute.

Source
QuillBot: What features does the free plan include?

QuillBot's free plan includes paraphrasing (125-word limit, 2 modes), grammar checking with limited daily checks, summarizing (1,200-word limit), and basic translation.

Source
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