What is the difference between Claude 3 Haiku and Mercury?

Claude 3 Haiku is developed by Anthropic while Mercury is developed by Inception. Claude 3 Haiku has a 200K token context window vs Mercury's 32K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Haiku or Mercury?

It depends on your use case. Claude 3 Haiku and Mercury each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Claude 3 Haiku cost compared to Mercury?

Claude 3 Haiku costs $0.25/M input tokens and Mercury costs $10/M input tokens. Claude 3 Haiku is $9.75/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude 3 Haiku and Mercury on Rival?

This page shows a side-by-side comparison of Claude 3 Haiku and Mercury across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between Claude 3 Haiku and Mercury?

Claude 3 Haiku is developed by Anthropic while Mercury is developed by Inception. Claude 3 Haiku has a 200K token context window vs Mercury's 32K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Haiku or Mercury?

It depends on your use case. Claude 3 Haiku and Mercury each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Claude 3 Haiku cost compared to Mercury?

Claude 3 Haiku costs $0.25/M input tokens and Mercury costs $10/M input tokens. Claude 3 Haiku is $9.75/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude 3 Haiku and Mercury on Rival?

This page shows a side-by-side comparison of Claude 3 Haiku and Mercury across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Jun 2025

Claude 3 HaikuvsMercury

Claude 3 Haiku is cheaper than Mercury at $0.25/M vs $10/M input tokens.

Claude 3 Haiku and Mercury compared across 54 shared prompts
Spec	Claude 3 Haiku	Mercury
Input price	$0.25/M tokens	$10/M tokens
Output price	$1.25/M tokens	$10/M tokens
Context window	200K tokens	32K tokens
Released	Mar 2024	Jun 2025
HumanEval	88.1%	90.0%

Our Verdict

Claude 3 Haiku

Mercury

Not enough votes to call it. On the specs, nothing separates them.

Claude 3 Haiku costs 8.0x less per token.

Too close to call

What do Claude 3 Haiku and Mercury say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude 3 Haiku

Input

$0.25

40× cheaper

Output

$1.25

8.0× cheaper

Mercury

Input

$10.00

Output

$10.00

Claude 3 Haiku is cheaper on both — 40× input, 8.0× output

Writing DNA

Style Comparison

Similarity

44%

Mercury uses 4.3x more emoji

Claude 3 Haiku

Mercury

50%Vocabulary55%

22wSentence Length40w

0.71Hedging0.39

0.3Bold4.9

5.9Lists3.8

0.00Emoji0.04

0.00Headings1.04

0.08Transitions0.03

Based on 13 + 17 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude 3 Haiku vs Ox AlphaNew provider

Claude 3 Haiku vs MiniMax M3New provider

Claude 3 Haiku vs GPT-5New provider

Claude 3 Haiku vs Llama 4 MaverickNew provider

Claude 3 Haiku vs GLM 5 TurboNew provider

Claude 3 Haiku vs GLM 5.1New provider

Claude 3 Haiku vs GLM 5.2New provider

Mercury vs Golden Gate ClaudeCross-provider

Updated Jun 2025

Claude 3 HaikuvsMercury

Claude 3 Haiku is cheaper than Mercury at $0.25/M vs $10/M input tokens.

Claude 3 Haiku and Mercury compared across 54 shared prompts
Spec	Claude 3 Haiku	Mercury
Input price	$0.25/M tokens	$10/M tokens
Output price	$1.25/M tokens	$10/M tokens
Context window	200K tokens	32K tokens
Released	Mar 2024	Jun 2025
HumanEval	88.1%	90.0%

Our Verdict

Claude 3 Haiku

Mercury

Not enough votes to call it. On the specs, nothing separates them.

Claude 3 Haiku costs 8.0x less per token.

Too close to call

What do Claude 3 Haiku and Mercury say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude 3 Haiku

Input

$0.25

40× cheaper

Output

$1.25

8.0× cheaper

Mercury

Input

$10.00

Output

$10.00

Claude 3 Haiku is cheaper on both — 40× input, 8.0× output

Writing DNA

Style Comparison

Similarity

44%

Mercury uses 4.3x more emoji

Claude 3 Haiku

Mercury

50%Vocabulary55%

22wSentence Length40w

0.71Hedging0.39

0.3Bold4.9

5.9Lists3.8

0.00Emoji0.04

0.00Headings1.04

0.08Transitions0.03

Based on 13 + 17 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude 3 Haiku vs Ox AlphaNew provider

Claude 3 Haiku vs MiniMax M3New provider

Claude 3 Haiku vs GPT-5New provider

Claude 3 Haiku vs Llama 4 MaverickNew provider

Claude 3 Haiku vs GLM 5 TurboNew provider

Claude 3 Haiku vs GLM 5.1New provider

Claude 3 Haiku vs GLM 5.2New provider

Mercury vs Golden Gate ClaudeCross-provider