# Parasail vs Thinking Machines

> Parasail sells cheap serving on aggregated GPUs, strongest for batch on any Hugging Face model. Thinking Machines sells the training step before serving, through Tinker.

Canonical: https://www.subconscious.dev/compare/parasail-vs-thinking-machines · By The Subconscious Team · Updated September 30, 2026

## How they compare

Parasail is an inference broker. It aggregates GPUs from many providers behind one OpenAI-compatible API with serverless, elastic, dedicated and batch tiers. Batch runs any Hugging Face model, private repos included, at half of serverless pricing, and a 4B to 8B model costs $0.03 in and $0.06 out per million at FP4. Real-time traffic targets a 600ms p99. Thinking Machines does not compete on serving. Tinker gives researchers four low-level training calls, runs LoRA SFT or RL on models like Qwen3.5, Nemotron 3 and DeepSeek-V3.1, and bills per million tokens on prefill, sample and train meters.

The handoff between them is natural. Parasail can serve a private Hugging Face repo, so a model trained elsewhere can move into its batch or dedicated tiers, though confirm how Tinker adapters export before planning that path. Tinker's own OpenAI-compatible endpoint is limited to testing and low internal traffic, and its serverless API serves only Inkling models at $1.00 in and $4.05 out. Parasail offers no training. Its weak point is consistency, since performance depends on the underlying third-party hardware, and reserved GPU pricing needs a sales call. Thinking Machines' Inkling has 1M context and audio input, which Parasail's listed catalog does not highlight.

## What each one does

### Parasail

Parasail calls itself the inference cloud for AI-native startups. Instead of owning data centers, it aggregates GPUs from many hardware providers and sells them through one OpenAI-compatible API. Customers choose serverless per-token endpoints, Elastic Endpoints that scale with traffic and bill only for tokens used, dedicated deployments with negotiated latency SLAs, or batch. Its commit-to-spend model lets one commitment draw down across any model or hardware.

### Thinking Machines

Thinking Machines Lab is the San Francisco lab Mira Murati, formerly CTO of OpenAI, founded in February 2025, with OpenAI co-founder John Schulman as chief scientist. It raised about $2 billion at a $12 billion valuation in July 2025 in a round led by Andreessen Horowitz, and in March 2026 signed a multi-year Nvidia deal for one gigawatt of Vera Rubin capacity. Its main developer product is Tinker, an API for post-training open-weight models that launched in October 2025 and is now generally available. Tinker exposes four low-level calls, forward_backward, optim_step, sample and save_state, so teams write their own supervised or reinforcement learning loops while Thinking Machines runs the distributed GPU work. Training uses LoRA adapters rather than full weight updates.

## Which is best, and when

### Choose Parasail for

- Offline evals and embeddings at batch rates
- Serving private Hugging Face repos
- Moving traffic off closed APIs on flexible commits

### Choose Thinking Machines for

- Writing custom SFT or RL training loops
- LoRA training on large MoE models
- Trying Inkling with 1M context and audio input

## At a glance

| Attribute | Parasail | Thinking Machines |
|---|---|---|
| Model access | Any Hugging Face model | Open weights |
| Flagship models | GTE-Qwen2, Qwen3-VL-8B-Instruct | Inkling, Inkling-Small |
| Speed | 600ms p99 real-time budget | - |
| Price | Per-parameter rates; batch 50% off | Per 1M tokens by prefill, sample, train; Inkling $1.00 in, $4.05 out |
| Customization | Private Hugging Face repos | LoRA SFT and RL via Tinker |
| Deployment | Serverless, elastic, dedicated, batch | Training API, beta serverless (Inkling only) |
| Long context | Varies by model | Inkling up to 1M; Tinker 32K–256K |

## FAQ

### What is the difference between Parasail and Thinking Machines?

Parasail sells cheap serving on aggregated GPUs, strongest for batch on any Hugging Face model. Thinking Machines sells the training step before serving, through Tinker.

### When should I choose Parasail over Thinking Machines?

Offline evals and embeddings at batch rates; Serving private Hugging Face repos; Moving traffic off closed APIs on flexible commits.

### When should I choose Thinking Machines over Parasail?

Writing custom SFT or RL training loops; LoRA training on large MoE models; Trying Inkling with 1M context and audio input.

### Is Parasail or Thinking Machines cheaper?

Parasail: Per-parameter rates; batch 50% off. Thinking Machines: Per 1M tokens by prefill, sample, train; Inkling $1.00 in, $4.05 out. The cheaper choice depends on the model and workload.

### Which has more context, Parasail or Thinking Machines?

Parasail: Varies by model. Thinking Machines: Inkling up to 1M; Tinker 32K–256K.

## Running long-horizon agents?

If your agents run past 200K tokens, compare both against Subconscious: [Subconscious vs Parasail](https://www.subconscious.dev/compare/subconscious-vs-parasail.md), [Subconscious vs Thinking Machines](https://www.subconscious.dev/compare/subconscious-vs-thinking-machines.md).

Full profiles: [Parasail](https://www.subconscious.dev/providers/parasail.md), [Thinking Machines](https://www.subconscious.dev/providers/thinking-machines.md).