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  1. Home
  2. Models
  3. Claude 3 Haiku
Updated Mar 29, 2026
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Openings

How Claude 3 Haiku starts an answer

The first lines of 5 of its 24 written answers. Formatting stripped, words untouched.

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

888 words
Investment Committee Memo Recommendation: Long 12-Month Price Target Range: $52 - $67 Thesis: LedgerLift is a leading B2B spend management and AP automation SaaS provider poised to capitalize on the growing mid-market enterprise demand for digital finance transformation.
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

745 words
Explanation for an experienced software engineer: As an experienced software engineer, you're likely familiar with the power of statistical models and predictive algorithms.
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

707 words
Here are the clauses in the contract that could be exploited against the contractor, along with suggested modifications and legal reasoning: Scope (Clause 1): The clause gives the client the right to modify the scope of work without any additional compensation to the contractor.
Read the full answer

Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

677 words
Here is a simulated interview with Steve Jobs in 2025 about the future of AI: Interviewer: Welcome back, Steve Jobs. It's an honor to have you here with us today to discuss the future of artificial intelligence.
Read the full answer

Movie Analysis

Analyze the themes, symbolism, and cinematography in the movie "Blade Runner 2049" and how they connect to the original film. Provide a…

651 words
Blade Runner 2049 is a powerful and thought-provoking sequel that builds upon the rich thematic and philosophical foundations established in the original Blade Runner film.
Read the full answer

Compare Claude 3 Haiku

Claude 3 Haiku vs Claude Opus 4.653 shared prompts · Newer
Claude 3 Haiku vs Claude Opus 554 shared prompts · Landed Jul 2026
Claude 3 Haiku vs Claude Sonnet 554 shared prompts · Landed Jun 2026
Claude 3 Haiku vs Mercury 2.5 Preview54 shared prompts · Landed Sep 2026
Claude 3 Haiku vs Ox Alpha54 shared prompts · Landed Aug 2026
Claude 3 Haiku vs Nemotron 3.5 Lightning54 shared prompts · Landed Aug 2026
Claude 3 Haiku vs Qwen3.8 27B53 shared prompts · Landed Aug 2026
Claude 3 Haiku vs GPT-5.6 Luna54 shared prompts · Landed Jul 2026
Claude 3 Haiku vs GPT-5.6 Luna Pro54 shared prompts · Landed Jul 2026
Claude 3 Haiku vs MiniMax M353 shared prompts · Landed Jun 2026
Claude 3 Haiku vs GPT-6 Astra54 shared prompts · Landed Sep 2026
Claude 3 Haiku vs Muse Spark 1.354 shared prompts · Landed Sep 2026

Prompts Claude 3 Haiku answered

  • Simple Falling Object Gameweb design
  • Character Voice Testconversation
  • Surprise Animal SVGimage generation
  • AI Ethics Dilemmareasoning
  • Startup Pitch Teardownreasoning
  • Kandinsky-Style 3D Minecraftweb design

Alternatives to Claude 3 Haiku

Claude 3 Haiku's competitors have been quietly putting in work.

GPT Image 2.5 Sunburst logo
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Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
Gemini 3.8 Flash logo
Gemini 3.8 Flashgoogle
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
Ox Alpha logo
Ox Alphaopenrouter
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Claude 3 Haiku

Claude 3 Haiku

Claude:
2 logo2
3 Haiku logo3 Haiku
3 Opus logo3 Opus
3 Sonnet logo3 Sonnet
Sonnet 3.6 (2022-10-22) logoSonnet 3.6 (2022-10-22)
3.7 Sonnet logo3.7 Sonnet

Claude 3 Haiku is Anthropic's fastest and most compact model, designed for near-instant responses in real-time applications with strong multilingual support.

WebsiteOpenRouterDocsAPIPaperBlog
Provider
Anthropic
Released
2024-03-04
Parameters
Not disclosed
Free API (OpenRouter)
No
Per 1M tokens
$0.25 in · $1.25 out
Rival’s tab
$0.03
25/58 receipts survived +~$0.025 from the pre-receipt era

Free API availability

No free endpoint for Claude 3 Haiku was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗

Benchmarks

MMLU Pro
65.0%
source ↗
GPQA Diamond
41.6%
source ↗
MATH
69.4%
source ↗
HumanEval
88.1%
source ↗
Time to First Token
0.36s
source ↗
Tokens per Second
52.54
source ↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"anthropic/claude-3-haiku"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Deep analysisPsychometrics, taste index, writing DNA
SubjectiveBench

Taste Index

Across 58 scored outputs
How this is measured →
130.13xFloor
0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft20
Originality10
Plays it safe
share of outputs that are the default answer
66%
Writing DNA

Stylometric Fingerprint

Based on 27 text responses
Tick = global average
Vocabulary Diversity53%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length31.0 words

Average words per sentence.

Hedging0.68

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting0.2

**Bold** markers per 1,000 characters.

List Usage3.7

Bullet and numbered list items per 1,000 characters.

Section Structure0.00

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.11

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Consistency
75%
Across 27 responses

Favorites

Spirited Away

Movie

Spirited Away

20018.5
Abbey Road

Album

Abbey Road

The Beatles
Siddhartha

Book

Siddhartha

Hermann Hesse
Paris

City

Paris

France
Tetris (1984)

Game

Tetris (1984)

Puzzle4.4
Sponsored

Model Responses

53 outputs · $0.03 tracked across 25 receipts

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

Build with your coding agent.

Editable skills for interface polish and interaction.

Explore $49Free sample

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Claude 3 Haiku vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Analysis & Critique

Blade Runner 2049 read closely, a long/short investment memo, a five-year LBO...