OpenCode vs ChatPDF vs Kimi Code vs OpenAI Codex

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

Your tool
OpenCode
vs
Competitor 1
ChatPDF
Competitor 2
Kimi Code
Competitor 3
OpenAI Codex
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 ChatPDF
chatpdf.com
ChatPDF is a document question-answering app: upload a PDF, ask questions in plain language, and get answers with built-in citations that point back to the source passage.
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Competitor Kimi Code
kimi.com
Writing code means constantly jumping between your editor and browser tabs stuffed with documentation
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Competitor OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
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Traffic estimated monthly website traffic
Monthly visits
—
—
60.1Mvisits/mo
204.3Mvisits/mo
MoM change
—
—
▲ 52.2%
▲ 3.6%
6-month growth
—
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+33.8%
+0.3%
Global rank web
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#852
#212
Avg. last 3 months
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48.3M
197.3M
Bounce rate lower is better
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37%
58%
Pages / visit
—
—
3.9
3.0
Visit duration
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7m 13s
2m 31s
Traffic sources
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● Direct 89% · ● Referral 10%
● Direct 81% · ● Referral 17%
OpenCodeChatPDFKimi CodeOpenAI Codex
066.6M133.2M199.7M266.3MKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1MOpenAI 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 · 204.3M10M100M1BKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1MOpenAI 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
Free
Freemium
Freemium
Starting price
Free
Free
$15per month · free tier available
$20per month · free tier available
Free tier
Free trial
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API access
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Plans
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Adagio FreePlus $15/moPro $31/moMax $79/mo+1 more
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Capabilities input → output
Input
CodeText
DocumentsTextWeb pages
CodeText
CodeText
Output
Code
Text
Code
Code
Skill level
Advanced
Beginner-friendly
Intermediate
Advanced
Categories
Development & CodeAI Coding Assistant
Education & LearningProductivity & OfficeResearch & AnalyticsWriting & Content+4 more
Development & CodeAI Coding Assistant
Development & CodeAI Code ReviewAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
3
7
6
4
Coding
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Developer tools
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Development
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PDFs
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Debugging
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Document summarization
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Homework assistance
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Refactoring
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Research
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Summarizing
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Academic research
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Code documentation
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Code reviews
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Developer assistance
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Shell commands
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Summaries
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 1
▲ 1
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
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.