Synapse Garden
Anthropic · MultimodalReleased 2025-08-05

claude-opus-4

anthropic/claude-opus-4 id

Claude Opus 4 is Anthropic's most powerful model yet and the best coding model in the world, leading on SWE-bench (72.5%) and Terminal-bench (43.2%). It delivers sustained performance on long-running tasks that require focused effort and thousands of steps, with the ability to work continuously for several hours—dramatically outperforming all Sonnet models and significantly expanding what AI agents can accomplish.

Tool useReasoningChat
Type
Use claude-opus-4
# Drop-in OpenAI-compatible client
$ import { generateText } from 'ai'
$ 
$ const { text } = await generateText({
$   model: 'anthropic/claude-opus-4',
$   baseURL: 'https://synapse.garden/api/v1',
$   apiKey: process.env.MG_KEY,
$   prompt: 'Why is the sky blue?',
$ })
200K
CONTEXT WINDOW
32K
MAX OUTPUT
$16.50/M
INPUT · PER M
$82.50/M
OUTPUT · PER M
PRICING

List prices, every modality.

RatePer million tokens · USD
Input$16.50/M
Output$82.50/M
Cache read$1.65/M
Cache write$20.63/M
Honest list pricesHow we calculate prices
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FAQ · CLAUDE-OPUS-4

Frequently asked

01 / 04

How do I call claude-opus-4 from my code?

Use the OpenAI or Anthropic SDK and point baseURL at https://synapse.garden/api/v1. Set model: ‘anthropic/claude-opus-4’ and supply your Synapse Garden API key. No code changes beyond the base URL.

02 / 04

How much does claude-opus-4 cost?

Input: $16.50/M per million tokens. Output: $82.50/M per million tokens. The free tier includes a million tokens every month at no cost.

03 / 04

What's the context window for claude-opus-4?

claude-opus-4 supports a context window of 200K tokens, with a maximum output of 32K tokens.

04 / 04

Do I need a separate Anthropic or OpenAI account?

No. Synapse Garden is the single API surface — one key gives you OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, xAI, Cohere, and more. Billing, rate limits, and audit logs are unified.

READY

Try claude-opus-4 in three minutes.

Sign up, create a key, drop our base URL into your existing client. The free tier includes a million tokens every month — no credit card.

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