# Anthropic vs StreamLake

> StreamLake's KAT-Coder-Pro V2.5 plugs into Claude Code through a Claude-protocol proxy and sells on a coding plan. It targets Claude's core use at lower cost, with China data residency.

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

## How they compare

StreamLake, the AI cloud brand of Kuaishou, aims its headline model at Anthropic's core market. KAT-Coder-Pro V2.5 is a proprietary agentic coding model that StreamLake says was trained with large-scale agentic reinforcement learning to handle repository-level work: reading an issue, changing multiple files, running tests and fixing its own errors. A Claude-protocol proxy drops it into Claude Code or OpenClaw, and developers can pay per token or buy a KwaiKAT Coding Plan. Anthropic's Claude models are closed as well, with top SWE-bench Pro results and a 1M window on the larger tiers.

Procurement likely settles this more than capability does. StreamLake's pricing and much of its documentation lead with China and yuan, and its data residency in China rules it out for many US and EU enterprise buyers. KAT-Coder's training claims come from StreamLake itself. Anthropic sells through its API, Bedrock, Vertex AI and Microsoft Foundry. Developers after low-cost agentic coding on a subscription, and Chinese internet businesses wanting domestic MaaS and bare metal, fit StreamLake. Western enterprise coding teams fit Claude.

## What each one does

### Anthropic

Anthropic sells the Claude family of closed models through its own API, Amazon Bedrock, Google Vertex AI and Microsoft Foundry. The public lineup today runs from Claude Fable 5.1 at the top, released September 1, 2026, through the Opus and Sonnet tiers down to Haiku 4.5. List prices span a tenfold range, from $10 in and $50 out on Fable to $1 in and $5 out on Haiku. The top three tiers include a 1M token context window at standard pricing with no surcharge past 200K.

### StreamLake

StreamLake is the AI cloud brand of Kuaishou, the Chinese short-video company behind the Kling video models. It sells model-as-a-service inference and bare-metal compute to internet businesses, drawing on the infrastructure Kuaishou built to serve video at massive scale. Its developer site offers APIs, SDKs and integration guides aimed at taking teams from testing to production.

## Which is best, and when

### Choose Anthropic for

- US and EU enterprises that need data outside China
- Coding agents backed by published benchmark results
- Procurement through major Western clouds

### Choose StreamLake for

- Low-cost agentic coding on a subscription plan
- Chinese businesses wanting domestic MaaS and bare metal
- Trying Kuaishou's coding model inside Claude Code

## At a glance

| Attribute | Anthropic | StreamLake |
|---|---|---|
| Model access | Closed | Proprietary coding models |
| Flagship models | Claude Fable 5.1, Opus, Sonnet, Haiku 4.5 | KAT-Coder-Pro V2.5, KAT-Coder-Air |
| Speed | Fable is the slowest tier | - |
| Price | $1–$10 in, $5–$50 out per 1M | Per token or KwaiKAT Coding Plan |
| Customization | N/A | - |
| Deployment | API, Bedrock, Vertex AI, Microsoft Foundry | MaaS API, bare metal |
| Long context | 1M, no surcharge past 200K | - |

## FAQ

### What is the difference between Anthropic and StreamLake?

StreamLake's KAT-Coder-Pro V2.5 plugs into Claude Code through a Claude-protocol proxy and sells on a coding plan. It targets Claude's core use at lower cost, with China data residency.

### When should I choose Anthropic over StreamLake?

US and EU enterprises that need data outside China; Coding agents backed by published benchmark results; Procurement through major Western clouds.

### When should I choose StreamLake over Anthropic?

Low-cost agentic coding on a subscription plan; Chinese businesses wanting domestic MaaS and bare metal; Trying Kuaishou's coding model inside Claude Code.

### Is Anthropic or StreamLake cheaper?

Anthropic: $1–$10 in, $5–$50 out per 1M. StreamLake: Per token or KwaiKAT Coding Plan. The cheaper choice depends on the model and workload.

## Running long-horizon agents?

If your agents run past 200K tokens, compare both against Subconscious: [Subconscious vs Anthropic](https://www.subconscious.dev/compare/subconscious-vs-anthropic.md), [Subconscious vs StreamLake](https://www.subconscious.dev/compare/subconscious-vs-streamlake.md).

Full profiles: [Anthropic](https://www.subconscious.dev/providers/anthropic.md), [StreamLake](https://www.subconscious.dev/providers/streamlake.md).