Offers a polished managed Kubernetes cloud experience with better template stability, but can be slightly more expensive.
Offers a polished managed Kubernetes cloud experience with better template stability, but can be slightly more expensive.
Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. Vast.ai records 1,257,554 monthly visits with +2.8% growth and Paid pricing.
Rent cloud GPUs by the second from a global marketplace
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | arena.ai | vast.ai |
| Pricing Model | Free | Paid |
| Monthly Visits | 35.83M (35,827,928) | 1.26M (1,257,554) |
| MoM Traffic Delta | +5.83M (+19.4%) | +34.24K (+2.8%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇺🇸 United States (16.7%) |
| Direct Visits / mo | 24.34M | 937.11K |
| User Rating | 4.7 | 4.6 |
| Supported Platforms | Website | Website |

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.
Rent cloud GPUs by the second from a global marketplace
Rent from a global pool of 20,000+ GPUs spanning more than 60 GPU types, from RTX 3060-class cards to GB200s, across 40+ data centers.
Choose on-demand for guaranteed uptime, interruptible at 50%+ cheaper, or reserved terms at up to 50% off with guaranteed capacity.
Pay only for the compute you use with per-second billing and no minimum hours, so experiments and short jobs stay affordable.
Provision and optimize instances entirely through code using the CLI, Python SDK, or REST API, which also makes the platform agent-ready.
Offers a polished managed Kubernetes cloud experience with better template stability, but can be slightly more expensive.
Offers a polished managed Kubernetes cloud experience with better template stability, but can be slightly more expensive.

SpecialistTogether AI is the AI Native Cloud — a full-stack platform for running, fine-tuning and training open-source models. It spans serverless inference APIs, dedicated endpoints, GPU clusters, post-training and storage, all backed by in-house systems research.
SpecialistTogether AI is the AI Native Cloud — a full-stack platform for running, fine-tuning and training open-source models. It spans serverless inference APIs, dedicated endpoints, GPU clusters, post-training and storage, all backed by in-house systems research.
SpecialistServerless cloud infrastructure for AI and data workloads
SpecialistServerless cloud infrastructure for AI and data workloads
Provides enterprise-grade AI cloud infrastructure with managed ML tools, replacing peer-to-peer rentals with reliable data centers.
Provides enterprise-grade AI cloud infrastructure with managed ML tools, replacing peer-to-peer rentals with reliable data centers.

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

Free / Open-sourceLeverages distributed idle consumer hardware to deliver significantly cheaper inference and container workloads, with lower reliability guarantees.
Free / Open-sourceLeverages distributed idle consumer hardware to deliver significantly cheaper inference and container workloads, with lower reliability guarantees.

Agent Skills that give your coding agent real design taste
Agent Skills that give your coding agent real design taste
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free / Open-sourceSearch and study millions of public SKILL.md agent skills

SpecialistLow-cost serverless inference APIs for 200+ open models

Free AI hackathons and a global community for AI builders
Free AI hackathons and a global community for AI builders

Builds large-scale data center GPU clusters tailored for heavy model training, lacking peer-to-peer spot pricing.
Builds large-scale data center GPU clusters tailored for heavy model training, lacking peer-to-peer spot pricing.
Community plugin, rule, and MCP server hub for Cursor
Community plugin, rule, and MCP server hub for Cursor