JetBrains AI Assistant vs Codespell vs OpenCode vs Theia IDE

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
JetBrains AI Assistant
vs
Competitor 1
Codespell
Competitor 2
OpenCode
Competitor 3
TITheia IDE
Compare
4 tools · best value per row highlighted
Your tool JetBrains AI Assistant
jetbrains.com
JetBrains AI Assistant brings AI chat, coding agents and code completion directly into JetBrains IDEs.
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Competitor Codespell
codespell.ai
CodeSpell, recently rebranded as SoftSpell, operates as an IDE-integrated coding assistant that generates code and documentation through a combination of inline suggestions and chat-based interactions
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Competitor OpenCode
opencode.ai
OpenCode is an open-source AI coding agent that helps developers write code in the terminal, an IDE or a desktop app.
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Competitor TITheia IDE
theia-ide.org
An open-source IDE that puts AI at the center while giving you complete control over how it works
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Traffic estimated monthly website traffic
Monthly visits
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35.3Kvisits/mo
MoM change
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▼ 53.3%
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▼ 8.1%
6-month growth
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-40.2%
Global rank web
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#9,819,950
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#929,571
Avg. last 3 months
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1.6K
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41.1K
Bounce rate lower is better
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0%
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41%
Pages / visit
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1.7
Visit duration
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27s
Traffic sources
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JetBrains AI AssistantCodespellOpenCodeTheia IDE
014.8K29.5K44.3K59.1KCodespell · 4.6KCodespell · 3.9KCodespell · 3.2KCodespell · 1.5KTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3K1K10K100KCodespell · 4.6KCodespell · 3.9KCodespell · 3.2KCodespell · 1.5KTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3KDec '25Jan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Free Trial
Free
Free
Starting price
€8.33per month · free tier available
$12per month
Free
Free
Free tier
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Free trial
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API access
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Plans
AI Free FreeAI Pro (individual) €100/yrAI Pro (organization) €200/yr
Starter $12/moGrowth $20/moEnterprise Custom
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Capabilities input → output
Input
CodeText
CodeText
CodeText
CodeText
Output
Code
CodeDocuments
Code
Code
Skill level
Intermediate
Intermediate
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding AssistantAI Testing
Development & CodeAI Coding Assistant
Development & CodeAI Coding AssistantAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
5
9
6
5
Coding
Developer tools
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Development
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Agents
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Code autocompletion
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Modernization
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Agent creation
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Code documentation
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Local AI
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MCP
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Self hosted
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Test automation
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Test cases
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Test creation
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Testing
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Vs code
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
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Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.