OpenAI Codex CLI vs GitHub Copilot vs ChatPDF vs Kimi 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
GitHub Copilot
Competitor 2
ChatPDF
Competitor 3
Kimi 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.
Remove
Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
Make main Remove
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.
Make main Remove
Competitor Kimi Code
kimi.com
Writing code means constantly jumping between your editor and browser tabs stuffed with documentation
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
637.9Mvisits/mo
—
60.1Mvisits/mo
MoM change
—
▲ 3.7%
—
▲ 52.2%
6-month growth
—
+19.3%
—
+33.8%
Global rank web
—
#49
—
#852
Avg. last 3 months
—
629.7M
—
48.3M
Bounce rate lower is better
—
36%
—
37%
Pages / visit
—
5.9
—
3.9
Visit duration
—
6m 26s
—
7m 13s
Traffic sources
—
● Direct 83% · ● Referral 15%
—
● Direct 89% · ● Referral 10%
OpenAI Codex CLIGitHub CopilotChatPDFKimi Code
0159.5M318.9M478.4M637.9MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1M10M100M1BGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Paid
Freemium
Free
Freemium
Starting price
—
$4per month · free tier available
Free
$15per month · free tier available
Free tier
–
Free trial
–
–
–
API access
–
–
–
–
Plans
GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
Free FreeTeam $4/moEnterprise $21/mo
—
Adagio FreePlus $15/moPro $31/moMax $79/mo+1 more
Capabilities input → output
Input
CodeImagesText
CodeText
DocumentsTextWeb pages
CodeText
Output
Code
Code
Text
Code
Skill level
Advanced
Intermediate
Beginner-friendly
Intermediate
Categories
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Education & LearningProductivity & OfficeResearch & AnalyticsWriting & Content+4 more
Development & CodeAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
4
9
12
6
Coding
–
Agents
–
–
Debugging
–
–
Developer tools
–
–
Terminal
–
–
Code autocompletion
–
–
–
Interactive PDF processing
–
–
–
PDF analysis
–
–
–
PDFs
–
–
–
Code reviews
–
–
–
Coding in VS Code
–
–
–
Document summarization
–
–
–
PDF summaries
–
–
–
PDF translations
–
–
–
Refactoring
–
–
–
Research
–
–
–
Summarizing
–
–
–
Vs code
–
–
–
Academic research
–
–
–
Agent management
–
–
–
Developer assistance
–
–
–
Document reading
–
–
–
Homework assistance
–
–
–
Shell commands
–
–
–
Summaries
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 1
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
2
0
0
Verified listing
–
–
–
–

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.