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Kong Reviews

Anthropic (Claude API) pricing

Anthropic (Claude API) has 4 plans, with base fees from $0 to $0 a month. Prices were checked against Anthropic (Claude API)'s pricing page on 22 October 2026.

Category: AI API. Source: https://claude.com/pricing#api.

Plans

PlanBase feeIncludes
Claude Haiku 5.5$0/moCommercial use allowed, HIPAA / BAA available, GDPR data processing agreement, Text generation (LLM API), Image input (vision)
Claude Sonnet 5.5$0/moCommercial use allowed, HIPAA / BAA available, GDPR data processing agreement, Text generation (LLM API), Image input (vision)
Claude Opus 5.5$0/moCommercial use allowed, HIPAA / BAA available, GDPR data processing agreement, Text generation (LLM API), Image input (vision)
Claude Fable 5.1$0/moCommercial use allowed, HIPAA / BAA available, GDPR data processing agreement, Text generation (LLM API), Image input (vision)

Anthropic (Claude API) cost as you grow

Monthly cost for a typical B2B SaaS app, from the cost engine.

UsersPlanMonthly cost
1,000 usersClaude Haiku 5.5$0/mo
10,000 usersClaude Haiku 5.5$0/mo
50,000 usersClaude Haiku 5.5$0/mo
100,000 usersClaude Haiku 5.5$0/mo

Lock-in

Low to medium: the Messages API is simple to swap, but prompts, tool definitions and output quality need re-testing on another model.

Set up Anthropic (Claude API)

Packages: @anthropic-ai/sdk. Environment variables: ANTHROPIC_API_KEY. Quickstart.

Everything Anthropic (Claude API) sells

ProductFree tierLowest paid price
Claude Haiku 5.5—$0.10 per 1M input tokens, $0.50 per 1M output (prompts up to 100K)
Claude Sonnet 5.5—$2 per 1M input tokens, $10 per 1M output
Claude Opus 5.5—$4 per 1M input tokens, $20 per 1M output
Claude Fable 5.1—$10 per 1M input tokens, $50 per 1M output

Startups built with Anthropic (Claude API)

  • Dub: Short links, conversion tracking and affiliate programs
  • Inbox Zero: An open-source AI assistant for your email
  • Jan: An open-source ChatGPT alternative that runs offline
  • Twenty: The open-source CRM, an alternative to Salesforce

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Supported OpenAI, Anthropic, Vercel, Stripe, AWS and DigitalOcean connections sync completed months nightly. Billing access depends on the provider; personal Claude API keys cannot read organization costs.

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