OpenAI Codex CLI vs OpenCode vs ReadDocs vs Kilo Code

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
OpenCode
Competitor 2
ReadDocs
Competitor 3
Kilo Code
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 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 ReadDocs
readdocs.co.uk
Upload a PDF contract and ReadDocs spits out a one-minute summary, bullet points, and answers to specific questions you ask
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Competitor Kilo Code
kilocode.ai
Kilo Code is an open source AI agent Visual Studio (VS) Code extension that focuses on enhancing the efficiency of coding. The tool can generate code, automate tasks, and offer practical suggestions.
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Traffic estimated monthly website traffic
Monthly visits
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744visits/mo
1.9Kvisits/mo
MoM change
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▲ 141.6%
▼ 42.3%
6-month growth
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-94.4%
Global rank web
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#4,668,091
Avg. last 3 months
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384
10.5K
Bounce rate lower is better
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39%
34%
Pages / visit
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1.1
2.4
Visit duration
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19s
Traffic sources
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OpenAI Codex CLIOpenCodeReadDocsKilo Code
0186.2K372.3K558.5K744.7KReadDocs · 101ReadDocs · 308ReadDocs · 744Kilo Code · 744.7KKilo Code · 164KKilo Code · 48.6KKilo Code · 16KKilo Code · 33.5KKilo Code · 14.4KKilo Code · 10.5KKilo Code · 26.4KKilo Code · 3.2KKilo Code · 1.9K1001K10K100K1MReadDocs · 101ReadDocs · 308ReadDocs · 744Kilo Code · 744.7KKilo Code · 164KKilo Code · 48.6KKilo Code · 16KKilo Code · 33.5KKilo Code · 14.4KKilo Code · 10.5KKilo Code · 26.4KKilo Code · 3.2KKilo Code · 1.9KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Free
Freemium
Freemium
Starting price
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Free
Free tier
$20per month · free tier available
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
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Free FreePro £9.99/moBusiness £29/mo
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Capabilities input → output
Input
CodeImagesText
CodeText
DocumentsImagesText
CodeText
Output
Code
Code
Text
Code
Skill level
Advanced
Advanced
Beginner-friendly
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Productivity & OfficeWriting & ContentAI PDFAI Summarizer
Development & CodeAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
4
6
13
5
Coding
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Agents
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Developer tools
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Development
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Document chat
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Document q a
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Document summaries
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Document summarization
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PDF summaries
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Summarizing
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Coding in VS Code
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Interactive PDF processing
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OCR
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Official documents q a
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PDF analysis
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Summaries
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Code analysis
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Local AI
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Meeting summaries
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Self hosted
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Terminal
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Vs code
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YouTube summaries
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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
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.