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Anthropic API
An API for Anthropic's Claude AI models: a program sends text, images or documents and receives generated text, billed per token (a piece of a word).
Price: Pay per use: US$2 per million input tokens and US$10 per million output tokens for Claude Sonnet 5.5 (read 13 October 2026)
Free plan: free trial only
platform.claude.com
Who uses it, and for what
One row per story. The grade is for the claim that the business uses this tool, not for its revenue.
| Story | What it does there | When | Cost stated | Grade | Source |
|---|---|---|---|---|---|
| Base44 | Writes the app logic and the interface design of the generated apps; chosen over OpenAI models for cost per performance. Claude, accessed through AWS | B | TechCrunch, 18 June 2025: 6-month-old, solo-owned vibe coder Base44 sells to Wix for $80M cash | ||
| Cal AI | Second rented model provider for the photo estimate; the founder says different models are better with different foods. image-reading model, not named | B | A public page outside the story's source list | ||
| Screenshot to Code | Claude models write the code in some generation variants and turned screen recordings into prototypes from March 2024. Claude 3 Opus for video in March 2024, Claude 3.5 Sonnet from June 2024, Claude Opus 4.8 and Opus 5 in 2026 | since March 2024 | B | The hosted app's live code, read 14 October 2026 | |
| Chatbase | One of the model families that a customer can choose for an agent. Claude models | C | Chatbase pricing page, read 12 October 2026, with review sites costbench.com and chatarmin.com for the plan prices | ||
| Magnific | Named with Cursor in a later account as the model that wrote half of the code. Claude, used to write code | C | Startup Founder Stories: Javi López, Magnific, 0 to $10M ARR | ||
| TypingMind | Second model provider that customers can connect with their own API key, so the app does not depend on one provider. Claude | C | A public page outside the story's source list | ||
| Magai | Claude models offered in the chat; the company says it calls each lab's own API. Claude | C | A public page outside the story's source list | ||
| Softgen | Coding model that the agent can use to write the apps; the user chooses the model. Listed by the current owner. Claude; the site names Claude 4.5 in October 2026 | C | Softgen overview page by the current owner: The Original Full-Stack AI Builder | ||
| BoltAI | Supported model provider, reached with the customer's own API key. customer's own API key | C | BoltAI changelog, about page and home page, read 13 October 2026 | ||
| SEObot | One of three model APIs that write the articles; the founder switches between them as each improves. Claude | about US$30,000 a month for all model APIs together (founder, November 2025) | C | Starter Story podcast, 11 November 2025: I Make $250K/Month From 20 Apps, transcript on StationLM | |
| MagicSlides | Claude models in the premium group of the Premium plan; the founder said in 2024 that MagicSlides used Claude too. Claude Sonnet 4.6, Opus 4.8, Opus 4.6, Haiku 4.5 | C | MagicSlides pricing page, read 13 October 2026 | ||
| Polsia | Claude models ran every agent task at first; by mid-2026 the founder had moved many tasks to cheaper open-source models. Claude Opus 4.5 and 4.6; Sonnet and Haiku for some tasks | about US$1 million a month; US$1.5 million in the month before the May 2026 interview | C | Mixergy, 27 May 2026, interview by Andrew Warner: Polsia: AI Agent + Zero Employees = $10M Run Rate | |
| LLM Gateway | One of the providers to which the gateway routes requests. | C | LLM Gateway: About page | ||
| ChatSEO | Runs all of ChatSEO's agents for analysis, research and writing, reached through the Vercel AI Gateway. Claude models | C | ChatSEO: Sub-processors, with a change log to 1 September 2026 | ||
| fastwrite.io | One of the language model providers for text suggestions and the AI advisor. Claude | C | fastwrite.io Datenschutzerklärung (privacy policy), version of September 2026 | ||
| Koe | Listed among the AI model providers for frames, videos, audio and assistant answers; the model is not named. | C | Koe Privacy Policy | ||
| AppAlchemy | Supplies language models for the generation; the founder's tech stack lists it without naming a model. | C | TrustMRR, AppAlchemy markdown profile, read 14 October 2026 | ||
| Topical Map AI | Offered on every plan in 2025 as a second model provider next to OpenAI. | C | Topical Map AI home page, archived 20 January 2025 | ||
| Adspirer | Listed as a model provider in the founder's technology list; no source says which model or for which feature. | C | TrustMRR: Adspirer profile, read 15 October 2026 | ||
| SuperbulletAI | Claude models generate the code and game systems; Opus 4.5 was added in December 2025. Claude Sonnet 4.0, Claude Opus 4.5, Opus 4.7 | since June 2025 | C | SuperbulletAI pricing, downloads, roadmap and FAQ pages, read 15 October 2026 | |
| Sleek | Listed by the founders in the product's tech stack; the model and its task are not stated. | C | TrustMRR: Sleek, Stripe-verified revenue and sale listing | ||
| Kleo | Claude writes the posts, and its memory feature learns each member's writing style over time. Claude, with Claude Memory | C | ConnectSafely, updated 16 May 2026: Kleo Review: LinkedIn AI Tool Pricing & Features | ||
| Chat Thing | One of the model providers that customers can choose for their agents, reached through OpenRouter. Claude models, for example Claude Sonnet 5 | C | Chat Thing list of sub-processors, updated 29 July 2026 | ||
| Wave AI | Answers users' questions in the chat assistant from transcript excerpts. | C | Wave Data Processing Addendum, Annex 3: subprocessors and vendors | ||
| StoryShort | Writes the script of each video, according to the site's FAQ in October 2026. Claude | C | StoryShort home page, read 16 October 2026 | ||
| Laper | Runs the screenwriting assistant, according to a company post of 13 October 2025; the access route is not stated. Claude Sonnet 4 | C | Laper llms-full.txt, the company's generated reference for AI assistants |
Grade A: the tool's maker or a payment processor confirms the use. Grade B: an independent report, or the tool is visible in public code. Grade C: the founder or the company says so.
Used in the same businesses
Other tools in the stories above, with the number of stories that share both.
Other tools for the same job
AI models, with the number of stories that use each.