Anthropic API
LLM Gateways & APIs · Free + paid
APIs for Claude language models
At a glance
- Made by
- Anthropic
- Korean
- UI in Korean
- API
- Yes
- Available on
- Web, API
What is Anthropic API?
Claude Platform is a developer API that lets you use Claude's latest models (Fable, Opus, Sonnet, Haiku) through the Messages API. Input and output pricing is set per 1 million tokens (MTok) for each model, and it states that batch processing can cut costs by 50% and prompt caching by up to 90%. It offers features such as code execution, structured outputs, tool use, computer use, and web search, plus Claude Managed Agents (beta) for long-running agents. You can manage usage and costs in the Claude Console, and it is also available on AWS, Google Cloud, and Microsoft Foundry.
- Code execution
- Structured outputs (JSON schema)
- Tool use and computer use
- Citations and file uploads
- Context window of up to 1 million tokens
- Web search and fetch
- Batch processing (50% savings) and prompt caching (up to 90% savings)
- Claude Managed Agents (beta), MCP, Skills
Who uses Anthropic API and for what
- Building long-running agents and multi-agent systems
- Agentic coding and enterprise tasks
- Automating high-volume work such as classifying customer support tickets
Pricing
| Plan | Price | Main limits |
|---|---|---|
| Fable 5.1 input | $10 | Per 1 million tokens (MTok) |
| Fable 5.1 output | $50 | Per 1 million tokens (MTok) |
| Opus 5.5 input | $4 | Per 1 million tokens (MTok) |
| Opus 5.5 output | $20 | Per 1 million tokens (MTok) |
| Sonnet 5.5 input | $2 | Per 1 million tokens (MTok) |
| Sonnet 5.5 output | $10 | Per 1 million tokens (MTok) |
| Haiku 5.5 input | $0.1 | Per 1 million tokens (MTok), for prompts up to 100K tokens ($0.50 beyond that) |
| Haiku 5.5 output | $0.5 | Per 1 million tokens (MTok), for prompts up to 100K tokens ($2.50 beyond that) |
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to Anthropic API (alternatives)
Anthropic API vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| Anthropic API | Free + paid | 0 | 7 | — | — | Yes |
| Cerebras Inference | Free + paid | 0 | 7 | Yes | — | No |
| Google Gemini API | Free + paid | 0 | 7 | Yes | — | Yes |
| GroqCloud | Free + paid | 0 | 7 | — | — | No |
| Mistral API | Free + paid | 0 | 7 | Yes | — | No |
3 of these 5 tools have a free plan.
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
Anthropic API on AI Galaxy Map
- One of 14 AI tools in the LLM Gateways & APIs field.
- Connected to 7 other tools — #1 in its field.
Frequently asked questions
Can I use Anthropic API for free?
Fable 5.1 input $10, Fable 5.1 output $50, Opus 5.5 input $4, Opus 5.5 output $20, Sonnet 5.5 input $2, Sonnet 5.5 output $10, Haiku 5.5 input $0.1, Haiku 5.5 output $0.5. Prices can change, so check the official site before paying.
What AI can I use instead of Anthropic API?
Tools that do the same job, such as Cerebras Inference, Google Gemini API, GroqCloud, Mistral API, are connected to it on the map.
Can I use Anthropic API in Korean?
UI in Korean
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.