GitHub Copilot vs Constella vs OpenCode vs OpenAI Codex CLI

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

Your tool
GitHub Copilot
vs
Competitor 1
Constella
Competitor 2
OpenCode
Competitor 3
OpenAI Codex CLI
Compare
4 tools · best value per row highlighted
Your tool GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
Remove
Competitor Constella
constella.app
Opening Constella drops you into a system that ditches the usual file cabinet metaphor entirely
Make main Remove
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.
Make main Remove
Competitor OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
637.9Mvisits/mo
7.4Kvisits/mo
—
—
MoM change
▲ 3.7%
▼ 2.5%
—
—
6-month growth
+19.3%
+67.1%
—
—
Global rank web
#49
#1,944,958
—
—
Avg. last 3 months
629.7M
9.2K
—
—
Bounce rate lower is better
36%
35%
—
—
Pages / visit
5.9
5.0
—
—
Visit duration
6m 26s
1m 48s
—
—
Traffic sources
● Direct 83% · ● Referral 15%
—
—
—
GitHub CopilotConstellaOpenCodeOpenAI Codex CLI
0159.5M318.9M478.4M637.9MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MConstella · 21.7KConstella · 9.6KConstella · 4.5KConstella · 3.7KConstella · 13.9KConstella · 12.4KConstella · 7.6KConstella · 7.4K1K10K100K1M10M100M1BGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MConstella · 21.7KConstella · 9.6KConstella · 4.5KConstella · 3.7KConstella · 13.9KConstella · 12.4KConstella · 7.6KConstella · 7.4KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Freemium
Free
Paid
Starting price
$4per month · free tier available
$5.99per month · free tier available
Free
—
Free tier
–
Free trial
–
–
–
API access
–
–
–
–
Plans
Free FreeTeam $4/moEnterprise $21/mo
Free FreeConstella Beta $5.99/yr
—
GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
Capabilities input → output
Input
CodeText
DocumentsTextWeb pages
CodeText
CodeImagesText
Output
Code
Text
Code
Code
Skill level
Intermediate
Intermediate
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Education & LearningAI Knowledge Management
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
5
6
4
Coding
–
Agents
–
Developer tools
–
–
Terminal
–
–
Code autocompletion
–
–
–
Code reviews
–
–
–
Coding in VS Code
–
–
–
Knowledge bases
–
–
–
Knowledge exploration
–
–
–
Research
–
–
–
Vs code
–
–
–
Agent management
–
–
–
Debugging
–
–
–
Development
–
–
–
Digital information management
–
–
–
Local AI
–
–
–
Note taking
–
–
–
Self hosted
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
2
0
0
0
Verified listing
–
–
–
–

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.