Question 1

What is Claude 3.5 Haiku?

Accepted Answer

Claude 3.5 Haiku is a large language model from Anthropic, released on 4 November 2024. Fast + cheap with a huge context — great for RAG and classification.

Question 2

When was Claude 3.5 Haiku released?

Accepted Answer

Claude 3.5 Haiku was released by Anthropic on 4 November 2024.

Question 3

How much does Claude 3.5 Haiku cost?

Accepted Answer

Claude 3.5 Haiku costs $0.80 per 1 million input tokens and $4.00 per 1 million output tokens via Anthropic’s API. At a typical 3:1 input/output ratio the blended cost works out to about $1.60 per 1M tokens.

Question 4

How smart is Claude 3.5 Haiku?

Accepted Answer

Claude 3.5 Haiku scores 58 out of 100 on our intelligence index — a capable mid-tier composite of MMLU, MMLU Pro, GPQA, MATH and HumanEval benchmark scores. That places it #19 of 22 language models we track.

Question 5

What is the context window of Claude 3.5 Haiku?

Accepted Answer

Claude 3.5 Haiku has a 200k-token context window — roughly 150,000 words of text. That’s what you can fit into a single request (your prompt plus all uploaded documents and the model’s response combined).

Question 6

What is Claude 3.5 Haiku best for?

Accepted Answer

Claude 3.5 Haiku is most useful for rag, classification and form filling. Its key strengths are 200k context cheap, fast and reliable on extraction.

Question 7

How fast is Claude 3.5 Haiku?

Accepted Answer

Claude 3.5 Haiku generates around 130 output tokens per second with a typical time-to-first-token of 500 ms on the major API providers. Reasoning models that "think" before answering will appear slower on tokens-per-second since they spend time on internal chain-of-thought.

Question 8

Is Claude 3.5 Haiku better than Claude 4 Opus?

Accepted Answer

Claude 4 Opus scores higher on our intelligence index (81 vs 58), so on the hardest tasks Claude 4 Opus typically wins. Claude 3.5 Haiku can still be the better pick on price, latency or specific capabilities. See our full Claude 3.5 Haiku vs Claude 4 Opus comparison at /ai-models/compare/claude-4-opus-vs-claude-3-5-haiku/.

Question 9

What is the best alternative to Claude 3.5 Haiku?

Accepted Answer

The closest alternatives to Claude 3.5 Haiku are Claude 4 Opus, Claude 4 Sonnet and Claude 3.5 Sonnet. Each shares most of Claude 3.5 Haiku’s use-cases — pick by price, context window or specific capability rather than headline intelligence.

Question 10

Is Claude 3.5 Haiku open source?

Accepted Answer

No. Claude 3.5 Haiku is proprietary — the weights are not released. Access is via Anthropic’s own API and partner platforms. For open-weights alternatives in the same tier, see our open-source AI models page.

Question 11

Can I use Claude 3.5 Haiku for free?

Accepted Answer

Anthropic offers a free tier of Claude 3.5 Haiku through claude.ai with daily usage limits. The API is paid, though new accounts get a small starting credit. Some Slack, Notion and developer-tool integrations also bundle Claude usage without separate billing.

Claude 3.5 Haiku

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