OpenCode vs Functionize vs OpenAI Codex vs Gemini CLI

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

Your tool
OpenCode
vs
Competitor 1
Functionize
Competitor 2
OpenAI Codex
Competitor 3
Gemini CLI
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 Functionize
functionize.com
Functionize is an agentic quality platform whose Studio product builds, runs and maintains tests against your live application.
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Competitor OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
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Competitor Gemini CLI
github.com
It can query and edit large codebases, generate new apps from PDFs, images, or sketches using multimodal input, and debug problems when you describe them in plain language.
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Traffic estimated monthly website traffic
Monthly visits
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204.3Mvisits/mo
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MoM change
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▲ 3.6%
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6-month growth
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+0.3%
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Global rank web
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#212
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Avg. last 3 months
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197.3M
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Bounce rate lower is better
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58%
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Pages / visit
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3.0
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Visit duration
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2m 31s
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Traffic sources
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● Direct 81% · ● Referral 17%
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OpenCodeFunctionizeOpenAI CodexGemini CLI
066.6M133.2M199.7M266.3MOpenAI Codex · 266.3MOpenAI Codex · 225MOpenAI Codex · 210.1MOpenAI Codex · 191.2MOpenAI Codex · 203.7MOpenAI Codex · 195.7MOpenAI Codex · 203.1MOpenAI Codex · 190.4MOpenAI Codex · 197.2MOpenAI Codex · 204.3M100M1BOpenAI Codex · 266.3MOpenAI Codex · 225MOpenAI Codex · 210.1MOpenAI Codex · 191.2MOpenAI Codex · 203.7MOpenAI Codex · 195.7MOpenAI Codex · 203.1MOpenAI Codex · 190.4MOpenAI Codex · 197.2MOpenAI Codex · 204.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Freemium
Freemium
Free
Starting price
Free
$20per month · free tier available
$20per month · free tier available
Free
Free tier
Free trial
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API access
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Plans
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Free FreeGrowth $20/moScale $100/moEnterprise Custom
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Free (personal Google account) Free
Capabilities input → output
Input
CodeText
TextWeb pages
CodeText
CodeDocumentsImagesText
Output
Code
Data
Code
Code
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Testing
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
2
5
4
4
Coding
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Developer assistance
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Test automation
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Testing
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Code analysis
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Developer tools
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Test creation
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Test generation
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Code documentation
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Code reviews
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Development
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Test cases
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 1
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
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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.