inkstone.pro

What It Is

Inkstone is a beta-stage AI-assisted writing service from Kentauros AI, Inc., positioned as a “Co-Creative Writer.” Rather than being a simple text generator, it brings writing, rewriting, editing, research, fact-checking, and proofreading into a single workflow. It is aimed at people who work heavily with documents, such as freelance writers, consultants, journalists, lawyers, product managers, and administrative assistants.

Core Capabilities

Inkstone’s AI assistant, Jeannie, can rewrite, polish, move text around, and automatically proofread based on user input and documents. It can also perform deep research and web searches. One standout feature is fact-checking: it identifies claims in a document, searches the web for supporting or opposing evidence, and cites sources. The official site also emphasizes feature parity between desktop and mobile, making it suitable for continuing document work while commuting, on the sofa, or in other mobile scenarios.

Pricing and Trial

Inkstone offers a free plan at $0/month, including unlimited document editing, unlimited AI Chat, and 100 Tool Fuel Credits. Paid plans include Pro at $20/month, Expert at $50/month, and Guru at $200/month, with 500, 1500, and 7500 credits respectively. Additional usage can be purchased on a pay-as-you-go basis, with unit prices ranging from $0.04 to $0.032/credit. The terms state that paid fees are generally non-refundable unless required by law or explicitly stated in writing by the company.

Pros and Cons

Its main strength is a complete workflow, especially for professional writers who need to research, write, and verify facts at the same time. Full-featured mobile support is also a plus. The drawbacks are also clear: the official site does not disclose the underlying model, context length, Chinese-language capability, API access, or third-party integrations. The service is still in beta, and the terms explicitly state that it may change, be interrupted, experience downtime, or cause data loss. AI outputs may also vary, so human review is still necessary in real-world use.

Who It’s For and Access from China

Inkstone is better suited to professional English writing, research, proofreading, and proposal/report production, especially for independent consultants, journalists, copywriters, and small teams. The main content does not clarify Chinese-language support or access from mainland China, and payment methods are not disclosed. Chinese users should first test network connectivity, payment availability, and Chinese output quality. Possible alternatives include ChatGPT, Perplexity, Notion AI, Grammarly, Jasper, and Copy.ai.