
Crowdsourced arena where AI models compete and humans crown the best design output
Bitbucket records 13,080,878 monthly visits with -1.2% month-over-month growth and Freemium pricing. Code Arena records 35,827,928 monthly visits with +19.4% growth and Free pricing.

Git hosting and CI/CD for teams that live in Jira
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | bitbucket.org | arena.ai |
| Pricing Model | Freemium | Free |
| Monthly Visits | 13.08M (13,080,878) | 35.83M (35,827,928) |
| MoM Traffic Delta |
| -153.21K (-1.2%) |
| +5.83M (+19.4%) |
| Primary Market & Share | 🇺🇸 United States (21.7%) | 🇮🇳 India (13.1%) |
|---|
| Direct Visits / mo | 10.28M | 24.34M |
|---|
| User Rating | 4.3 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|

Git hosting and CI/CD for teams that live in Jira
Host unlimited private or public repositories with branch permissions, merge checks and inline code review.
Run CI/CD in the cloud or on private runners with pipeline configuration, deployment environments and centralized visibility.
Link commits, branches and pull requests to Jira issues to trace every change from requirement to production.
Atlassian's AI agents assist with code review, pipeline triage, onboarding to a codebase and converting Jira items into code.

Battle-test AI coding models side by side
Send the same coding prompt to multiple leading models and compare their generated apps and logic side by side.
Watch models construct web apps and websites live, so you can see process and output, not just the final file.
Projects go beyond one-off snippets, testing how well a model structures components, routes, and styles together.
Track which coding models accumulate the most wins over time to identify consistently strong performers.

Crowdsourced arena where AI models compete and humans crown the best design output

Agent Skills that give your coding agent real design taste
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
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Free AI hackathons and a global community for AI builders
Fast Apply and agent-tuned inference for coding agents

SpecialistAI DevOps engineer that deploys and scales your apps

Self-hosted cloud development environments and AI coding agents for enterprise teams
Community plugin, rule, and MCP server hub for Cursor

Agent-native cloud infrastructure that lets coding agents run the whole backend stack

Cloud Linux VMs built for developers and their AI agents

Benchmark computer- and phone-use AI agents with blind head-to-head battles
The bug bounty platform built for AI and ML security
Crowdsourced arena where AI models compete and humans crown the best design output
Agent Skills that give your coding agent real design taste
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free AI hackathons and a global community for AI builders
Fast Apply and agent-tuned inference for coding agents
SpecialistAI DevOps engineer that deploys and scales your apps
Community plugin, rule, and MCP server hub for Cursor
Cloud Linux VMs built for developers and their AI agents
Benchmark computer- and phone-use AI agents with blind head-to-head battles
The bug bounty platform built for AI and ML security