# Crusoe vs Sail Research

> Sail Research trades latency for discounts of 30 to 80% through completion windows. Crusoe optimizes for fast responses on repeated context and owns its capacity.

Canonical: https://www.subconscious.dev/compare/crusoe-vs-sail-research · By The Subconscious Team · Updated September 30, 2026

## How they compare

Sail and Crusoe sit at opposite ends of the latency dial. Sail asks customers how long they can wait. Its priority window targets about a one-minute turn for roughly 30 to 50% off its asap price, the standard window about five minutes for 45 to 65% off, and flex runs off-peak for 60 to 80% off. It serves Kimi K2.6, GLM-5, GPT-OSS 120B, Qwen 3.6 and Gemma 4, plus customer LoRA fine-tunes, over OpenAI and Anthropic-compatible APIs. Crusoe's catalog overlaps on Kimi, GLM and gpt-oss, priced from $0.05 in and $0.20 out, and its cluster-wide KV cache aims to cut time to first token, which Crusoe claims improves up to 9.9x over vLLM on prefix-heavy work.

Workload shape decides it. Sail is explicitly unsuited to voice, live chat or interactive UIs, but for background agents that run for hours it pairs cheap tokens with Sailboxes, persistent compute that can run indefinitely. Detail.dev uses it for code-scanning agents that run three to four hours. Sail claims 3x to 10x cost savings over comparable hosts. Crusoe covers the interactive side, with dedicated deployments, tailored SLAs, managed LoRA fine-tuning and raw GPU clusters on GB200 and B200. A team could route user-facing turns to Crusoe and overnight evals to Sail.

## What each one does

### Crusoe

Crusoe started in 2018 turning wasted natural gas into power for computing and has since become a vertically integrated AI infrastructure company: it sources energy, builds data centers and rents GPUs through Crusoe Cloud. It designed and built the Abilene, Texas campus behind the OpenAI and Oracle Stargate project, planned at 1.2 GW, and in March 2026 announced an adjacent 900 MW campus for Microsoft. On September 17, 2026 it closed the first part of a $3.9B Series F at a $30.9B post-money valuation, and it reports over 6 GW of contracted capacity. Crusoe Cloud lists GB200 NVL72, B200 and AMD MI355X by quote, with H100 at $3.90 and H200 at $4.29 per GPU-hour on demand.

### Sail Research

Sail Research sells throughput over latency. Founders Neil Movva and Samir Menon built a serving stack that packs as much work as possible into every GPU, and customers state how long they can wait through completion windows. The priority window targets about a one-minute turn for roughly 30 to 50% off the immediate asap price. The default standard window targets about five minutes for 45 to 65% off. The flex window runs off-peak for 60 to 80% off.

## Which is best, and when

### Choose Crusoe for

- Interactive chat and agents users wait on
- Dedicated capacity with tailored SLAs
- Fine-tuning plus raw GPU clusters

### Choose Sail Research for

- Background agents that run for hours
- Evals and offline research at deep discounts
- Agents that need persistent sandboxes

## At a glance

| Attribute | Crusoe | Sail Research |
|---|---|---|
| Model access | Open weights | Open weights |
| Flagship models | DeepSeek V4, GLM 5.3, Kimi K2.6, Nemotron 3 | Kimi K2.6, GLM-5, GPT-OSS 120B |
| Speed | Up to 9.9x faster TTFT vs vLLM (vendor claim) | Minutes per turn by design |
| Price | $0.05–$1.74 in, $0.20–$4.40 out per 1M | 30–80% off by completion window |
| Customization | Serverless LoRA fine-tuning | Customer LoRA fine-tunes |
| Deployment | Serverless, self-serve and tailored dedicated, raw GPUs | API plus Sailboxes |
| Long context | Varies by model; cluster-wide KV cache | Varies by model |

## FAQ

### What is the difference between Crusoe and Sail Research?

Sail Research trades latency for discounts of 30 to 80% through completion windows. Crusoe optimizes for fast responses on repeated context and owns its capacity.

### When should I choose Crusoe over Sail Research?

Interactive chat and agents users wait on; Dedicated capacity with tailored SLAs; Fine-tuning plus raw GPU clusters.

### When should I choose Sail Research over Crusoe?

Background agents that run for hours; Evals and offline research at deep discounts; Agents that need persistent sandboxes.

### Is Crusoe or Sail Research cheaper?

Crusoe: $0.05–$1.74 in, $0.20–$4.40 out per 1M. Sail Research: 30–80% off by completion window. The cheaper choice depends on the model and workload.

### Which has more context, Crusoe or Sail Research?

Crusoe: Varies by model; cluster-wide KV cache. Sail Research: Varies by model.

## Running long-horizon agents?

If your agents run past 200K tokens, compare both against Subconscious: [Subconscious vs Crusoe](https://www.subconscious.dev/compare/subconscious-vs-crusoe.md), [Subconscious vs Sail Research](https://www.subconscious.dev/compare/subconscious-vs-sail-research.md).

Full profiles: [Crusoe](https://www.subconscious.dev/providers/crusoe.md), [Sail Research](https://www.subconscious.dev/providers/sail-research.md).