Open Source and Self-Hosting

1 min read
Best ForTrade-offs
Moonshot API (direct)Easiest setup, official support$0.60/$3.00 per 1M tokens, data leaves your infrastructure
US based providers (Fireworks, OpenRouter)US data residency, simple integrationSlight price variation, third party dependency
Self-hosted (vLLM/TGI)Full control, data sovereignty, offline accessRequires multiple A100/H100 GPUs, operational overhead
Quantized (GGUF/AWQ/GPTQ)Lower hardware requirementsSome quality degradation, community maintained

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MoonViT vision encoder

Annual cost comparison for equivalent workloads

K2.5 costs approximately $13,800 per year for a typical workload. The same workload on GPT-5.2 costs approximately $56,500, and on Claude Opus 4.6 approximately $150,000. That is roughly 76% lower than both closed source alternatives for comparable output quality.

Who should self-host?

Self-hosting K2.5 makes sense if you need data sovereignty (no data leaves your infrastructure), want to fine-tune the model on proprietary data, need offline or air-gapped access, or process enough volume that per token API costs exceed the cost of running your own hardware. For everyone else, the API through Moonshot or a US based provider like Fireworks is simpler and more cost effective.