LLM·Dex
Newsletter
ProprietaryAnthropicsmalltextvision

Claude Haiku 4

Anthropic's smallest 4-tier model, fast and cheap with the family's signature tone.

Updated

Quick facts

Released
Oct 2025
Context
200K tokens
Output / 1M
Pricing not published
License
Proprietary

About Claude Haiku 4

Haiku 4 modernizes the small Claude line for fast, cheap workloads. It's the right tier for routing, classification, and high-volume chat. Quality lags Sonnet visibly on creative work but is fine for structured tasks.

Haiku 4 is also the most affordable way to get Anthropic's tone, useful when you're shipping a Claude-style brand voice at scale.

Benchmarks

Published scores from Anthropic's model card or independent leaderboards. We do not publish numbers we cannot source, see methodology.

HumanEval
,
Python coding pass@1
MMLU
,
Broad academic knowledge
GPQA
,
Graduate-level reasoning
SWE-bench
,
Real software-engineering tasks
Benchmark scores not yet available. We only publish numbers we can source from official model cards or independent leaderboards, see methodology.

Capabilities

Strengths

  • Fast and cheap for an Anthropic model
  • Inherits Claude's sensible defaults
  • Vision support included

Tracked weaknesses

  • Quality gap visible on creative tasks
  • Less reliable on hard tool-use chains

Pricing

Per-million-token rates as published by Anthropic.

Per-token pricing not yet published for Claude Haiku 4. Check the official provider site for current tiers.

Call Claude Haiku 4 from your code

Drop-in snippet for the Anthropic SDK. Set your API key in the environment and run.

typescript
import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  apiKey: process.env.ANTHROPIC_API_KEY,
});

const message = await client.messages.create({
  model: "claude-haiku-4",
  max_tokens: 1024,
  messages: [
    { role: "user", content: "What's the time complexity of quicksort?" },
  ],
});

console.log(message.content);

Best for

Tasks where Claude Haiku 4 ranks among LLMDex's top picks.

Compare Claude Haiku 4 with…

Frequently asked

  • How much does Claude Haiku 4 cost?
    Anthropic has not published per-token API pricing for Claude Haiku 4 at the time of writing. Check the official site for current pricing tiers, or compare against alternative models on LLMDex.
  • What is Claude Haiku 4's context window?
    Claude Haiku 4 supports a context window of 200K tokens.
  • Is Claude Haiku 4 open source?
    No. Claude Haiku 4 is a closed-weight model, you can use it via Anthropic's API but the model weights are not publicly downloadable.
  • When was Claude Haiku 4 released?
    Claude Haiku 4 was released on Oct 1, 2025 by Anthropic.
Friday digest

Intelligence, distilled weekly.

One short email every Friday, new model launches, leaderboard moves, and pricing drops. Curated by hand. Free, no spam.