claude-opus-5 — API, Pricing & Context Window | Vivgrid
Run Anthropic's claude-opus-5 on Vivgrid: the flagship Opus coding model with a 1M-token context window, 128K max output, and worldwide geo-distributed acceleration.
claude-opus-5 is Anthropic's flagship model for agentic coding, complex reasoning, and long-running tool workflows. Its 1M-token context window and 128K-token max output make it a strong fit for whole-repository analysis, substantial code generation, and multi-step agents.
Vivgrid serves claude-opus-5 through the native Messages API (/messages) with geo-distributed acceleration across AMER, EMEA, and APAC. Teams can use one Vivgrid API key and route requests to nearby infrastructure without changing their Claude-compatible clients.
Specifications
| Provider | Anthropic |
| Model ID | claude-opus-5 |
| Best for | Coding |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| Modalities | Text, Image |
| Tool / function calling | Yes |
| Knowledge cutoff | 2026-06 |
| 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-5 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-5",
"max_tokens": 1024,
"messages": [
{ "role": "user", "content": "Say hello in English, Chinese and Spanish." }
],
"stream": true
}'Ideal use cases
- Frontier coding agents and autonomous software development
- Whole-codebase analysis, migration, and large refactoring projects
- Complex reasoning and planning across long agent sessions
- Reliable tool-calling workflows with large inputs and outputs
Related models
- claude-opus-4-8 — the prior Opus generation
- claude-sonnet-5 — a faster, lower-cost Claude model
- gpt-5.6-sol — OpenAI's flagship coding model
- kimi-k3 — a frontier Moonshot coding alternative