# Union.ai Alternatives

12 alternatives to Union.ai (17.79K monthly visits, Freemium, Contact for Pricing), matched by function and use case.

About Union.ai: The durable AI runtime that runs in your cloud, not ours — [Profile (Markdown)](https://openaitools.app/tool/union-cloud.md)

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Compare |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [RunPod](https://openaitools.app/tool/runpod) | 2,881,043 | +5.9% | Paid | The AI developer cloud for GPU pods, serverless inference and clustering | [Union.ai vs RunPod](https://openaitools.app/compare/runpod-vs-union-cloud.md) |
| 2 | [Vast.ai](https://openaitools.app/tool/vast-ai) | 1,257,554 | +2.8% | Paid | Rent cloud GPUs by the second from a global marketplace | [Union.ai vs Vast.ai](https://openaitools.app/compare/union-cloud-vs-vast-ai.md) |
| 3 | [Modal](https://openaitools.app/tool/modal-com) | 1,196,021 | +30.2% | Freemium, Contact for Pricing | Serverless cloud infrastructure for AI and data workloads | [Union.ai vs Modal](https://openaitools.app/compare/modal-com-vs-union-cloud.md) |
| 4 | [Lightning AI](https://openaitools.app/tool/lightning-ai) | 272,562 | -12.3% | Freemium, Paid, Contact for Pricing | The AI cloud built by the creators of PyTorch Lightning | [Union.ai vs Lightning AI](https://openaitools.app/compare/lightning-ai-vs-union-cloud.md) |
| 5 | [Nebius](https://openaitools.app/tool/nebius) | 1,145,711 | +10.7% | Paid, Contact for Pricing | An AI-native cloud built from silicon to API for training, tuning, and serving models | [Union.ai vs Nebius](https://openaitools.app/compare/nebius-vs-union-cloud.md) |
| 6 | [Metaflow](https://openaitools.app/tool/metaflow-org) | 15,278 | -18.1% | Free | Open-source Python framework for real-life ML, AI, and data science workflows | [Union.ai vs Metaflow](https://openaitools.app/compare/metaflow-org-vs-union-cloud.md) |
| 7 | [Anyscale](https://openaitools.app/tool/anyscale-com) | 49,779 | -23.2% | Paid, Contact for Pricing | Managed Ray platform for scaling AI workloads | [Union.ai vs Anyscale](https://openaitools.app/compare/anyscale-com-vs-union-cloud.md) |
| 8 | [FluidStack](https://openaitools.app/tool/fluidstack) | 154,620 | +7.3% | Paid, Contact for Pricing | Gigawatt-scale AI compute, built and operated end to end | [Union.ai vs FluidStack](https://openaitools.app/compare/fluidstack-vs-union-cloud.md) |
| 9 | [Cirrascale](https://openaitools.app/tool/cirrascale-com) | 27,190 | +17.5% | Paid | Private AI cloud for training and inference workloads | [Union.ai vs Cirrascale](https://openaitools.app/compare/cirrascale-com-vs-union-cloud.md) |
| 10 | [boat](https://openaitools.app/tool/boat) | 66,870 | +520.8% | Free Trial, Paid | Persistent Ubuntu cloud VMs built for AI agent factories | [Union.ai vs boat](https://openaitools.app/compare/boat-vs-union-cloud.md) |
| 11 | [Thunder Compute](https://openaitools.app/tool/thunder-compute) | 102,147 | -29% | Paid (per-minute instances, per-second sandboxes) | Low-cost cloud GPUs with per-minute instances and per-second sandboxes for AI workloads. | [Union.ai vs Thunder Compute](https://openaitools.app/compare/thunder-compute-vs-union-cloud.md) |
| 12 | [Together AI](https://openaitools.app/tool/together-ai) | 1,645,930 | +64.9% | Freemium, Paid | Together 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-trainin | [Union.ai vs Together AI](https://openaitools.app/compare/together-ai-vs-union-cloud.md) |

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Source: https://openaitools.app/alternatives/union-cloud

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