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Anthropic API

Developer API for Claude models with token-based billing, separate from Claude subscriptions.

Free accessNo free plan published
Paid fromClaude Sonnet 5$2 input and $10 output per MTok

Category: Development & Code · Agent & RAG frameworks

Features

The Anthropic API provides Claude models for custom applications and bills per token. This entry keeps API rates clearly separate from the already-listed Claude consumer subscriptions.

Claude Managed Agents (hosted agent sessions) bills the same model token rates plus $0.08 per session-hour, charged only while the session status is "running".

Prices and plans

TierPricePeriodWhat you get
Claude Sonnet 5$2 / $10per 1M input/output tokens$2 input and $10 output per MTok
Standard price; the announced increase will not occur
Claude Fable 5.1$10 / $50per 1M input/output tokens$10 input and $50 output per million tokens
Cache reads: $0.25 per million tokens
Claude Opus 5$5 / $25per 1M input/output tokens$5 input and $25 output per MTok
Cache writes: $6.25 (5 min) / $10 (1 hr) per MTok; cache reads: $0.50 per MTok
Fast mode (research preview, Claude API only): $10 input / $50 output per MTok across the full context window
Claude Haiku 4.5$1 / $5per 1M input/output tokens$1 input and $5 output per MTok
Cache writes: $1.25 (5 min) / $2 (1 hr) per MTok; cache reads: $0.10 per MTok

Limits

API billing is separate from Claude consumer subscriptions. For Fable 5.1, cache reads cost $0.25 per million tokens.

Similar tools

From the same subcategory “Agent & RAG frameworks”, continuing alphabetically from this entry.

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FAQ

Is Anthropic API available for free?

No. No free access is published on the vendor's own pages.

Where is Anthropic API's vendor based?

Anthropic, PBC, based in USA. For data processing and privacy terms the vendor's own contract governs.

Is Anthropic API still active?

Active offering, checked directly against the official vendor source.

How many plans are documented for Anthropic API?

The catalog documents 4 plans with price, billing period, and included features.

Which use case is Anthropic API categorized for?

Anthropic API is listed in the catalog under “Development & Code.”

Where do the details about Anthropic API come from?

Prices, limits, and product details are documented against the listed official vendor page.

How we compare

We compare free access, paid entry, plan limits, features and the listed official sources. Unsourced figures stay marked as not published.

Only confirmed entries appear in the catalog. Prices, plans and limits come from listed official vendor pages. Missing figures stay marked as not published. Result lists are alphabetical by default and can be switched to Free access first; neither is a quality ranking. The vendor page always wins.

Edited and checked by the AI Compare team

Sources

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