OpenAI Codex CLI vs Haystack vs LangChain vs Visual Studio 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
Haystack
Competitor 2
LangChain
Competitor 3
Visual Studio 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 Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
Make main Remove
Competitor LangChain
langchain.com
Framework for building with large language models
Make main Remove
Competitor Visual Studio Code
code.visualstudio.com
Visual Studio Code is a free, open source code editor that runs on Windows, macOS and Linux and now includes built-in AI agents.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
—
3.4Mvisits/mo
—
MoM change
—
—
▲ 0.7%
—
6-month growth
—
—
+21.0%
—
Global rank web
—
—
#13,384
—
Avg. last 3 months
—
—
3.3M
—
Bounce rate lower is better
—
—
42%
—
Pages / visit
—
—
6.2
—
Visit duration
—
—
5m 29s
—
Traffic sources
—
—
● Direct 73% · ● Referral 24%
—
OpenAI Codex CLIHaystackLangChainVisual Studio Code
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4M1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Paid
—
Freemium
Free
Starting price
—
—
$39per month · free tier available
Free
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
—
Developer FreePlus $39/moEnterprise Custom/mo
—
Capabilities input → output
Input
CodeImagesText
CodeDocuments
CodeText
CodeText
Output
Code
Apps
Apps
Code
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Coding Assistant
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
2
5
6
4
Developer tools
Agent creation
–
–
Agents
–
–
Coding
–
–
LLM development
–
–
Coding in VS Code
–
–
–
Vs code
–
–
–
Development
–
–
–
Agent memory
–
–
–
Agent testing
–
–
–
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
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.