claude-haiku-4-5 — API, Pricing & Context Window | Vivgrid

claude-haiku-4-5 is Anthropic's prior-generation Haiku model, designed for high-volume, latency-sensitive workloads that still benefit from Claude's quality. It offers a 200K-token context window on the Messages API. For new projects, claude-haiku-5-5 is the latest Haiku release, with a 1M-token context window at a lower per-token price.

Vivgrid accelerates claude-haiku-4-5 across AMER and EMEA, making it an excellent default for real-time assistants and large-scale agent fleets.

Specifications

Pricing

Pricing in USD per 1M tokens.

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-haiku-4-5 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-haiku-4-5 directly.

curl https://api.vivgrid.com/v1/messages \
  -H "Authorization: Bearer $VIVGRID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-haiku-4-5",
    "max_tokens": 1024,
    "messages": [
      { "role": "user", "content": "Say hello in English, Chinese and Spanish." }
    ],
    "stream": true
  }'

Ideal use cases

• Real-time chat and assistant experiences
• High-throughput classification and extraction
• Cost-sensitive tool-calling agents
• Fast first-pass steps in larger agent pipelines

Related models

• claude-haiku-5-5 — the latest Haiku release
• claude-sonnet-4-6 — a step up in capability
• claude-opus-5-5 — the latest frontier Opus model