Spark X2.5 4B
4.1B parameters · 1024k context · Apache 2.0 License · released 2026-08-24
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What to run it on in the UK
Fully in memory at 8k context, priced at retailers today.
Nothing we price holds this model fully in memory.
All hardware that runs it
Everything we price, best value first. Two cards split the model by layers.
Nothing we price can run it at this context.
Memory needed
Weights, KV cache and runtime buffers at each context length (KV cache at fp16).
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Run it
Copy a command for the runtime you use.
No published builds to run yet.
Notes
Native llama.cpp support requires b10828 or later; Ollama needs v0.34.1+. The 1M-token context needs substantial device memory, so reduce --context-length when necessary.
Questions
- What licence is Spark X2.5 4B released under?
- Apache 2.0 License, which allows commercial use.