claude-opus-4-8 — API, Pricing & Context Window | Vivgrid

claude-opus-4-8 is Anthropic's frontier Opus model and the strongest available choice for agentic coding and complex reasoning. It combines a 1M-token context window with the latest Opus capabilities, served on the Messages API (/messages).

On Vivgrid, claude-opus-4-8 is geo-distributed across AMER, EMEA, and APAC, giving Claude Code-style agents low-latency access worldwide through a single unified API key.

Specifications

Pricing

Pricing in USD per 1M tokens, matching the provider's rates.

What one request costs

The rates above applied to a 20K-token prompt with a 2K-token reply — a typical single agent turn, small enough that every request is billed at the base rate.

API surfaces

The Vivgrid Console catalogs claude-opus-4-8 on one surface, all behind the same API key. The endpoint shown is the one the Console previews for that surface.

Quick start

Get an API key from the Vivgrid Console, then call claude-opus-4-8 directly.

curl https://api.vivgrid.com/v1/messages \
  -H "Authorization: Bearer $VIVGRID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-4-8",
    "max_tokens": 1024,
    "messages": [
      { "role": "user", "content": "Say hello in English, Chinese and Spanish." }
    ],
    "stream": true
  }'

Ideal use cases

• Frontier coding agents and large-scale refactoring
• Complex, multi-step reasoning and planning
• Long-context document and codebase analysis (up to 1M tokens)
• Tool-using agents that demand high reliability

Related models

• claude-fable-5-1 — Anthropic's most capable model
• claude-opus-5-5 — the latest flagship Opus model
• claude-sonnet-5-5 — faster, lower-cost Claude