---
title: "Anthropic AI models — API access via RunAPI"
url: "https://runapi.ai/providers/anthropic.md"
canonical: "https://runapi.ai/providers/anthropic.md"
locale: "en"
provider: "Anthropic"
line_count: 1
variant_count: 7
---

# Anthropic

Claude Opus, Sonnet, and Haiku — Anthropic's reasoning-first LLMs for code, analysis, and extended context.

Anthropic builds the Claude family of large language models, spanning Opus (frontier reasoning), Sonnet (balanced), and Haiku (fast and efficient). All variants excel at complex reasoning, code generation, analysis, and extended-context tasks.

## Models

- [Claude](https://runapi.ai/models/claude.md) — Text, 7 variants · from $0.050

## Variants

| Model | Variant | Billing | Starting price | URL |
|---|---|---|---|---|
| Claude | `haiku-4-5-20251001` | 1K tokens | $0.050 | https://runapi.ai/models/claude/haiku-4-5-20251001.md |
| Claude | `opus-4-5-20251101` | 1K tokens | $0.250 | https://runapi.ai/models/claude/opus-4-5-20251101.md |
| Claude | `opus-4-6` | 1K tokens | $0.250 | https://runapi.ai/models/claude/opus-4-6.md |
| Claude | `opus-4-7` | 1K tokens | $0.250 | https://runapi.ai/models/claude/opus-4-7.md |
| Claude | `opus-4-8` | 1K tokens | $0.250 | https://runapi.ai/models/claude/opus-4-8.md |
| Claude | `sonnet-4-5-20250929` | 1K tokens | $0.130 | https://runapi.ai/models/claude/sonnet-4-5-20250929.md |
| Claude | `sonnet-4-6` | 1K tokens | $0.130 | https://runapi.ai/models/claude/sonnet-4-6.md |

## Install

```sh
npm install @runapi.ai/<line>
```

## FAQ

### Is this an official %{provider} integration?

RunAPI exposes a managed API surface with transparent pricing, capability, and error behavior.

### Do I need a %{provider} account?

No — your RunAPI key is enough for managed access.

### What&#39;s the latency overhead from proxying?

Typically under 20 ms. RunAPI keeps the proxy layer close to model execution regions.

### Are images / videos cached?

Generated outputs are stored and retrievable by task ID. Inputs are not cached.

### Can I bring my own key?

Not currently — calls use RunAPI-managed access.