OpenAI Codex vs Haystack vs GitHub Copilot vs OpenCode

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

Your tool
OpenAI Codex
vs
Competitor 1
Haystack
Competitor 2
GitHub Copilot
Competitor 3
OpenCode
Compare
4 tools · best value per row highlighted
Your tool OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
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Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
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Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
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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.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
204.3Mvisits/mo
—
637.9Mvisits/mo
—
MoM change
▲ 3.6%
—
▲ 3.7%
—
6-month growth
+0.3%
—
+19.3%
—
Global rank web
#212
—
#49
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Avg. last 3 months
197.3M
—
629.7M
—
Bounce rate lower is better
58%
—
36%
—
Pages / visit
3.0
—
5.9
—
Visit duration
2m 31s
—
6m 26s
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Traffic sources
● Direct 81% · ● Referral 17%
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● Direct 83% · ● Referral 15%
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OpenAI CodexHaystackGitHub CopilotOpenCode
0159.5M318.9M478.4M637.9MOpenAI 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 · 204.3MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9M100M1BOpenAI 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 · 204.3MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
—
Freemium
Free
Starting price
$20per month · free tier available
—
$4per month · free tier available
Free
Free tier
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Free trial
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–
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API access
–
–
–
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Plans
—
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Free FreeTeam $4/moEnterprise $21/mo
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Capabilities input → output
Input
CodeText
CodeDocuments
CodeText
CodeText
Output
Code
Apps
Code
Code
Skill level
Advanced
Advanced
Intermediate
Advanced
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Development & CodeAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
4
5
4
2
Coding
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Agents
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Code reviews
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Agent creation
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–
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LLM development
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–
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Developer assistance
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–
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Developer tools
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–
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Agent management
–
–
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Agent memory
–
–
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Code documentation
–
–
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Development
–
–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
2
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.