Start with the part that is slow
Prefill processes the input, while decode generates the response one token at a time. Long prompts can create substantial compute work. At low batch sizes, decode often spends much of its time moving model weights and attention state through memory. At higher concurrency, batching can improve weight reuse while increasing queueing and cache requirements. These are tendencies to investigate, not fixed labels for every model. Mixture-of-experts routing, attention architecture, quantization, and speculative decoding change the balance. Measure prefill and decode separately using the benchmarking guide.Which alternatives should you evaluate?
The linked explainers cite upstream architecture and software documentation, reviewed September 6, 2026. They describe evaluation paths, not new Tensorfuse hardware integrations. Use the deployment configuration reference for documented Tensorfuse resource options.
Separate memory capacity from memory bandwidth
Capacity determines whether weights, runtime buffers, and active request state fit. Bandwidth determines how quickly those bytes can move. Adding memory can prevent out-of-memory failures without improving generation speed. Splitting a model across more devices adds memory and compute, but also communication. For example, if one device cannot hold the model at the required context length, first compare quantization and sharding options. If the model fits but decode is slow, profile memory traffic and kernel execution. If individual requests are fast but users queue, test batching and replica capacity before replacing the hardware.Compare deployment economics at the same target
Keep model quality, input/output lengths, and latency targets fixed. Include host resources, storage, networking, idle capacity, compilation, engineering effort, and any provider minimum commitment. Compare cost per successful task within the latency target, alongside throughput and failures. Also choose where execution belongs. Calling a hosted API, operating a cloud accelerator, and running a model on a laptop create different data paths and operational responsibilities. An OpenAI-compatible API does not make those deployment models equivalent.Related guides
Benchmark inference
Measure the bottleneck and compare cost at a fixed service target.
Choose the model
Establish quality and compatibility before selecting hardware.

