OpenCode vs Constella vs GitHub Copilot vs Knowledge Plane

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

Your tool
OpenCode
vs
Competitor 1
Constella
Competitor 2
GitHub Copilot
Competitor 3
Knowledge Plane
Compare
4 tools · best value per row highlighted
Your tool 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 Constella
constella.app
Opening Constella drops you into a system that ditches the usual file cabinet metaphor entirely
Make main Remove
Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
Make main Remove
Competitor Knowledge Plane
knowledgeplane.io
Engineering teams watch their AI tools hallucinate outdated project details
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
7.4Kvisits/mo
637.9Mvisits/mo
—
MoM change
—
▼ 2.5%
▲ 3.7%
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6-month growth
—
+67.1%
+19.3%
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Global rank web
—
#1,944,958
#49
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Avg. last 3 months
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9.2K
629.7M
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Bounce rate lower is better
—
35%
36%
0%
Pages / visit
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5.0
5.9
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Visit duration
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1m 48s
6m 26s
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Traffic sources
—
—
● Direct 83% · ● Referral 15%
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OpenCodeConstellaGitHub CopilotKnowledge Plane
0159.5M318.9M478.4M637.9MConstella · 21.7KConstella · 9.6KConstella · 4.5KConstella · 3.7KConstella · 13.9KConstella · 12.4KConstella · 7.6KConstella · 7.4KGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9M1K10K100K1M10M100M1BConstella · 21.7KConstella · 9.6KConstella · 4.5KConstella · 3.7KConstella · 13.9KConstella · 12.4KConstella · 7.6KConstella · 7.4KGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Free
Freemium
Freemium
Freemium
Starting price
Free
$5.99per month · free tier available
$4per month · free tier available
$19per month · free tier available
Free tier
Free trial
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–
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API access
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Plans
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Free FreeConstella Beta $5.99/yr
Free FreeTeam $4/moEnterprise $21/mo
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Capabilities input → output
Input
CodeText
DocumentsTextWeb pages
CodeText
CodeDocumentsText
Output
Code
Text
Code
Text
Skill level
Advanced
Intermediate
Intermediate
Intermediate
Categories
Development & CodeAI Coding Assistant
Education & LearningAI Knowledge Management
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Education & LearningAI Knowledge Management
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
3
5
4
7
Coding
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Knowledge bases
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Digital information management
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Knowledge graphs
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Agents
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–
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Code reviews
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Knowledge
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–
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Knowledge exploration
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–
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Knowledge maps
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Knowledge sourcing
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Research
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–
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Agent management
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–
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Developer tools
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Development
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Knowledge exchange
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Note taking
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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
2
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.