OpenAI Codex vs OpenCode vs Haystack vs Qodo (Formerly Codium)

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

Your tool
OpenAI Codex
vs
Competitor 1
OpenCode
Competitor 2
Haystack
Competitor 3
Qodo (Formerly Codium)
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
Remove
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
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 Qodo (Formerly Codium)
qodo.ai
Qodo's Rules System lets you define coding standards once—then those standards evolve alongside your codebase
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
204.3Mvisits/mo
—
—
276.5Kvisits/mo
MoM change
▲ 3.6%
—
—
▲ 9.3%
6-month growth
+0.3%
—
—
-29.0%
Global rank web
#212
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#170,528
Avg. last 3 months
197.3M
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—
268.7K
Bounce rate lower is better
58%
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—
41%
Pages / visit
3.0
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—
2.4
Visit duration
2m 31s
—
—
49s
Traffic sources
● Direct 81% · ● Referral 17%
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● Direct 85% · ● Referral 11%
OpenAI CodexOpenCodeHaystackQodo (Formerly Codium)
066.6M133.2M199.7M266.3MOpenAI 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 · 204.3MQodo (Formerly Codium) · 615.8KQodo (Formerly Codium) · 609.3KQodo (Formerly Codium) · 596.7KQodo (Formerly Codium) · 389.5KQodo (Formerly Codium) · 422.6KQodo (Formerly Codium) · 409.8KQodo (Formerly Codium) · 276.6KQodo (Formerly Codium) · 253KQodo (Formerly Codium) · 276.5K100K1M10M100M1BOpenAI 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 · 204.3MQodo (Formerly Codium) · 615.8KQodo (Formerly Codium) · 609.3KQodo (Formerly Codium) · 596.7KQodo (Formerly Codium) · 389.5KQodo (Formerly Codium) · 422.6KQodo (Formerly Codium) · 409.8KQodo (Formerly Codium) · 276.6KQodo (Formerly Codium) · 253KQodo (Formerly Codium) · 276.5KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free
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Freemium
Starting price
$20per month · free tier available
Free
—
$30per month
Free tier
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Free trial
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API access
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Plans
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Free Trial CustomPro Team $30/moEnterprise Custom
Capabilities input → output
Input
CodeText
CodeText
CodeDocuments
Code
Output
Code
Code
Apps
CodeText
Skill level
Advanced
Advanced
Advanced
Intermediate
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Code ReviewAI Coding AssistantAI Testing
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
4
3
5
10
Coding
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Code reviews
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Developer tools
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Development
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Agent creation
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Agents
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LLM development
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Testing
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Code quality
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Code testing
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GitHub pull requests
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Test cases
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Test creation
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Unit tests
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Agent memory
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Code analysis
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Code documentation
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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
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.