Claude Opus 5

New model July 25, 2026

Anthropic's latest flagship reasoning model is now available on Amanai — same tier pricing as Opus 4.8.

Overview

Claude Opus 5 is Anthropic's newest and most capable model, succeeding the Opus 4.x family. It delivers deeper reasoning, improved instruction following, and better long-context performance.

✓Same tier pricing as Claude Opus 4.8 — no price increase.

✓Automatic failover across redundant Claude-compatible routes.

✓Full tool use, streaming, and up to 1M tokens of context.

✓Available on all three text endpoints: /v1/chat/completions, /v1/messages, and /v1/responses.

Pricing

Identical to Opus 4.8 — the flagship tier. No premium for the newer model.

Model	m_in	m_out	m_cache
`amanai/claude-opus-5`	18.15	90.75	2.72
`amanai/claude-opus-4.8`	18.15	90.75	2.72

Access

Use the same API key and request format. Just change the model ID:

bash

curl https://api.amanai.dev/v1/chat/completions \
  -H "Authorization: Bearer sk-amanai-..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "amanai/claude-opus-5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'