GitHub Copilot CLI vs OpenAI Codex CLI vs OpenCode vs Question Base

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

Your tool
GitHub Copilot CLI
vs
Competitor 1
OpenAI Codex CLI
Competitor 2
OpenCode
Competitor 3
Question Base
Compare
4 tools · best value per row highlighted
Your tool GitHub Copilot CLI
github.com
It reads, writes and runs code, works directly with your issues and pull requests, and carries a task from planning to merged code.
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Competitor OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
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.
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Competitor Question Base
questionbase.com
Question Base is an AI answer agent that lives in Slack and responds to employee questions using your company's documentation, wikis and past conversations.
Make main Remove
Traffic estimated monthly website traffic
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Bounce rate lower is better
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Pricing
Model
Free
Paid
Free
Paid
Starting price
Free
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Free
$5per month
Free tier
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Free trial
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API access
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Plans
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GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
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Proof of Concept $1,000Annual Pro $6,000/yrEnterprise+ $20,000/yr
Capabilities input → output
Input
CodeText
CodeImagesText
CodeText
DocumentsText
Output
Code
Code
Code
Text
Skill level
Intermediate
Advanced
Advanced
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Education & LearningAI Knowledge Management
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
5
4
6
6
Agents
Coding
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Developer tools
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Knowledge bases
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Slack
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Chatbots
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GitHub pull requests
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Knowledge optimization
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Development
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GitHub management
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Knowledge
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Local AI
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Self hosted
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Terminal
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Community on aitoolstime
Rating
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Upvotes
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Saves
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Reviews
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Prompts
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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.