OpenAI Codex CLI vs Dify vs OpenCode vs Voiceflow

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
Dify
Competitor 2
OpenCode
Competitor 3
Voiceflow
Compare
4 tools · best value per row highlighted
Your tool OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
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Competitor Dify
dify.ai
AI apps without code
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 Voiceflow
voiceflow.com
Design conversations visually
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
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1Mvisits/mo
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385Kvisits/mo
MoM change
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▼ 16.6%
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▼ 5.8%
6-month growth
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-30.6%
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-35.3%
Global rank web
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#39,510
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#93,201
Avg. last 3 months
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1.1M
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407.5K
Bounce rate lower is better
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41%
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38%
Pages / visit
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4.4
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5.2
Visit duration
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6m 40s
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3m 07s
Traffic sources
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● Direct 84% · ● Referral 15%
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● Direct 75% · ● Referral 24%
OpenAI Codex CLIDifyOpenCodeVoiceflow
0368.2K736.4K1.1M1.5MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MVoiceflow · 600.1KVoiceflow · 574.1KVoiceflow · 561.6KVoiceflow · 513.7KVoiceflow · 594.8KVoiceflow · 462.6KVoiceflow · 454KVoiceflow · 429.1KVoiceflow · 408.5KVoiceflow · 385K100K1M10MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MVoiceflow · 600.1KVoiceflow · 574.1KVoiceflow · 561.6KVoiceflow · 513.7KVoiceflow · 594.8KVoiceflow · 462.6KVoiceflow · 454KVoiceflow · 429.1KVoiceflow · 408.5KVoiceflow · 385KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Freemium
Free
Freemium
Starting price
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$590per month · free tier available
Free
Free tier
Free tier
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Free trial
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API access
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Plans
GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
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Capabilities input → output
Input
CodeImagesText
DocumentsText
CodeText
DocumentsText
Output
Code
Apps
Code
Apps
Skill level
Advanced
Intermediate
Advanced
Intermediate
Categories
Development & CodeAI Coding Assistant
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Development & CodeAI Coding Assistant
Business & MarketingChatbots & CompanionsProductivity & OfficeAI Agent+3 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
4
9
6
13
Agents
Developer tools
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Coding
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Agent creation
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Chatbots
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No-code
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Development
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Customer support
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Customer support chatbot
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Voice agents
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Workflows
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Call agents
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Call center automation
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Calls
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Chatbot building
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LLM development
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Call answering
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Local AI
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Productivity
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Self hosted
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Terminal
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Website to chatbot
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 0
▲ 1
Saves
0
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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.