Models
claude-opus-4-8 — API, Pricing & Context Window | Vivgrid
Run Anthropic's claude-opus-4-8 on Vivgrid: the frontier Opus coding model with a 1M-token context window, the Messages API, and geo-distributed acceleration.
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
| Provider | Anthropic |
| Model ID | claude-opus-4-8 |
| Best for | Coding |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| Modalities | Text, Image |
| Tool / function calling | Yes |
| Knowledge cutoff | 2026-01 |
| Acceleration | ⚡ Geo-Distributed — AMER, EMEA, APAC |
Pricing
Pricing in USD per 1M tokens, matching the provider's rates.
| Input | Cached input | Output |
|---|---|---|
| $5.00 | $0.50 | $25.00 |
Quick start
Call claude-opus-4-8 through Vivgrid's unified, OpenAI-compatible endpoint. Get an API key from the Vivgrid Console.
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-opus-4-7 — the prior Opus release
- claude-sonnet-5 — faster, lower-cost Claude
- gpt-5.5 — OpenAI's flagship coding model