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Claude

Claude Haiku 4.5

Official

anthropic/claude-haiku-4.5

The lowest-cost current-generation Claude. Fast and strong at classification, routing, extraction, and summarization. 200K-token context. Use for high-volume, latency-sensitive tasks.

200K contextVisionReasoningTool callingCodingPrompt cachemodelDetail.capabilities.strip_thinking_params

Pricing

Source: anthropic_x0.18 · Verified 2026-06-08

InputOfficial $1 / M tokens
$0.18/ M tokensSave 82%
OutputOfficial $5 / M tokens
$0.9/ M tokensSave 82%

Cache read $0.018/M · Cache write $0.225/M

Estimate cost

Estimated cost$0.0027

Protocols

  • OpenAI Chat CompletionsStatus: Not supported—
  • OpenAI ResponsesStatus: Not supported—
  • Anthropic MessagesStatus: Available: Streaminghttps://api.routemux.com/anthropic
  • Google Vertex AIStatus: Not supported—
  • OpenAI ImagesStatus: Not supported—
  • OpenAI SoraStatus: Not supported—

Call IDs

Use either ID to call this model via the API.

RouteMux nameanthropic/claude-haiku-4.5
Official IDclaude-haiku-4-5

Usable Model IDs

You can use these names directly in the request model field.

claude-haiku-4-5

Try it

Replace the ROUTEMUX_KEY placeholder with your API key. Create one →

from anthropic import Anthropic

client = Anthropic(
    base_url="https://api.routemux.com/anthropic",
    api_key="<ROUTEMUX_KEY>",
)

message = client.messages.create(
    model="anthropic/claude-haiku-4.5",
    max_tokens=1024,
    messages=[{"role": "user", "content": "What is the meaning of life?"}],
)
print(message.content[0].text)
base_url: https://api.routemux.com/anthropic

Frequently asked questions

›What is Claude Haiku 4.5?

Anthropic Claude Haiku 4.5 — cheapest current-gen, fast.

›How large is the context window of Claude Haiku 4.5?

Claude Haiku 4.5 supports a context window of up to 200K tokens, with up to 8K output tokens per request.

›How much does the Claude Haiku 4.5 API cost?

Through RouteMux, Claude Haiku 4.5 costs $0.18 for input and $0.9 for output (USD per 1M tokens), below the official list price.

›How do I call Claude Haiku 4.5 via API?

Claude Haiku 4.5 is OpenAI-compatible: point your base URL at RouteMux and set the model field to anthropic/claude-haiku-4.5 — no code changes needed.

›Which input and output modalities does Claude Haiku 4.5 support?

Claude Haiku 4.5 accepts text, image as input and produces text as output.