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  1. Home/
  2. Best for/
  3. Marketing Copy

Best AI for Marketing Copy

Copy that has to sell something: a music app called Wavefront, a startup that guesses your alternate career, a pitch deck under fire.

Updated Jun 2026·4 challenges·20 models

How Marketing Copy rankings are computed

20 models tested across 4 marketing copy challenges.Composite score: 30% Rival Index, 20% task coverage, 20% challenge-scoped duel performance, 15% recency, 15% tier. Deduplicated by product line. Gemini 3.1 Pro Preview leads at 80.1/100. Drawn from Rival's open dataset of 21,000+ human preference votes.

Rival’s pick·#7 Rival Index·Google flagship

Too close to call
Gemini 3.1 Pro PreviewGoogle AINeck and neck with GPT-6.1 Sol. Gemini 3.1 Pro Preview gets the nod on blind votes.

Composite scores combine task evidence, Rival Index, recency, and model tier. Rival’s pick is a separate editorial recommendation. How ranking works

  1. GPT-6.1 SolOpenAI$2.00·$10.00Input $2.00 · output $10.00, per 1M tokens
    #278Composite
  2. Gemini 3.1 Pro PreviewGoogle AI$2.00·$12.00Input $2.00 · output $12.00, per 1M tokens
    #180Composite
  3. Claude Fable 5Anthropic$10.00·$50.00Input $10.00 · output $50.00, per 1M tokens
    #376Composite

Head-to-head

  • Gemini 3.1 Pro PreviewvsGPT-6.1 Sol
  • Gemini 3.1 Pro PreviewvsClaude Fable 5
  • GPT-6.1 SolvsClaude Fable 5

What the top three actually wrote

Opening lines from 6 answers to 2 of the 4 prompts behind this ranking. Formatting stripped, words untouched.

Satirical Fake News Headline

Generate a satirical news headline about AI taking over a completely unexpected industry.

Gemini 3.1 Pro Preview19 words
Sign-Spinning Industry Devastated As AI-Powered Robot Twirls 'Mattress Sale' Arrow at 6,000 RPM and Ascends Into Low Earth Orbit
Read the full answer
GPT-6.1 Sol16 words
AI Takes Over Fortune Cookie Industry, Predicts “Your Job Will Soon Be Automated” in Every Cookie
Read the full answer
Claude Fable 581 words
"AI Now Dominates Competitive Cheese Rolling; Robot Refuses to Tumble Down Hill, Simply Calculates Optimal Cheese Trajectory From Safety of Summit" Gloucestershire officials report the algorithm has won three consecutive championships without sustaining a single broken bone, prompting outraged human competitors to…
Read the full answer

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Gemini 3.1 Pro Preview625 words
Based on the perspective of a venture capitalist or technical due diligence expert, here are the three weakest claims in the MindMeld AI pitch deck, why they fail, and how to fix them.
Read the full answer
GPT-6.1 Sol738 words
The three weakest claims are the technical performance, market size, and commercial traction claims. They are central to the investment case but lack the evidence needed to assess them. “Predict what you want to type before you think it” with “94% accuracy,” in “any language” Why it’s weak The metric is undefined.
Read the full answer
Claude Fable 5731 words
The 3 Weakest Claims in the MindMeld AI Pitch "94% accuracy decoding neural patterns into text... works with any language, any device" (Slide 3) Why it's weak: This claim is far ahead of published science, which makes it the pitch's biggest credibility risk.
Read the full answer

Full rankings

20 models
#ModelCoverageIndex
  • 4Qwen3.8 27BQwen
    4/4    #20$0.40·$3.00Input $0.40 · output $3.00, per 1M tokens75
  • 5GPT-5.6 SolOpenAI
    4/4    #155$5.00·$30.00Input $5.00 · output $30.00, per 1M tokens75
  • 6Gemini 3.8 FlashGoogle AI
    4/4    $0.75·$3.75Input $0.75 · output $3.75, per 1M tokens75
  • 7Qwen3.6 27BQwen
    4/4    #1$0.33·$3.25Input $0.33 · output $3.25, per 1M tokens72
  • 8Claude Sonnet 5.5Anthropic
    4/4    $2.00·$10.00Input $2.00 · output $10.00, per 1M tokens71
  • 9DeepSeek V4.1 FlashDeepSeek
    4/4    $0.15·$0.60Input $0.15 · output $0.60, per 1M tokens70
  • 10Qwen3.6 Plus Preview (free)Qwen
    4/4    #27$0.000·$0.000Input $0.000 · output $0.000, per 1M tokens70
  • 11Kimi K3Moonshot AI
    4/4    #46$3.00·$15.00Input $3.00 · output $15.00, per 1M tokens70
  • 12GPT-4.1OpenAI
    4/4    #77$2.00·$8.00Input $2.00 · output $8.00, per 1M tokens70
  • 13InklingThinking Machines
    4/4    #12$1.00·$4.05Input $1.00 · output $4.05, per 1M tokens69
  • 14Claude Haiku 4.5Anthropic
    4/4    #48$1.00·$5.00Input $1.00 · output $5.00, per 1M tokens69
  • 15MiMo-V2.5-ProXiaomi
    4/4    #60$1.00·$3.00Input $1.00 · output $3.00, per 1M tokens68
  • 16Grok 4.1 FastxAI
    4/4    #147–68
  • 17Gemma 4 26B A4BGoogle AI
    4/4    #28$0.13·$0.40Input $0.13 · output $0.40, per 1M tokens68
  • 18GPT-5.3-CodexOpenAI
    4/4    #108$1.75·$14.00Input $1.75 · output $14.00, per 1M tokens68
  • 19GPT OSS 120BOpenAI
    4/4    #130$0.18·$0.80Input $0.18 · output $0.80, per 1M tokens68
  • 20Sonoma Dusk AlphaOpenRouter
    3/4    #44$0.000·$0.000Input $0.000 · output $0.000, per 1M tokens68

Challenges4

  • Minimalist Landing PageRestraint on purpose. Most models cannot stop adding sections.
  • Music App Landing PageA landing page for a music app. Hero, proof, one button.
  • Satirical Fake NewsA fake headline that lands. Wit, not just format.
  • Startup Pitch TeardownA pitch taken apart. Charitable is not the assignment.

Related

  • SEO Content
  • Blog Writing
  • Social Media Content

Keep exploring

  • Gemini 3.1 Pro Preview vs GPT-6.1 SolThe top two for Marketing Copy, compared directly
  • Best AI for SEO ContentSee which models rank highest here
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