Prompt Library: 50 Gemini Prompts to Level Up Demand Gen and Content Marketing

Prompt Library: 50 Gemini Prompts to Level Up Demand Gen and Content Marketing

Problem: Your team juggles half-baked prompts across Slack, Google Docs, and a dozen apps. Results are inconsistent, onboarding is slow, and ROI is fuzzy. In 2026, that costs real headcount and revenue.

The payoff in 2026: why a Gemini prompt library matters now

AI is mainstream in marketing execution — but trust lags for strategy. Recent industry research (MFS 2026 State of AI & B2B Marketing) and MarTech reporting show ~78% of B2B marketing leaders use AI for execution, while only a small fraction trust AI for high-level positioning. That gap is an opportunity.

Instead of asking Gemini ad-hoc questions, the fastest path to predictable results is a curated, battle-tested prompt library with guardrails, test designs, and measurement hooks. The prompts below are built for marketers who need repeatable briefs, crisp audience personas, campaign experiments, and creative hooks that convert — ready to drop into Gemini (the latest stable models in early 2026) and integrate into workflows.

How to use this library (quick start)

1. Choose a prompt from the category that matches your goal (brief, persona, test, hook).
2. Fill the variables ({{product}}, {{audience}}, {{goal}}, etc.).
3. Settings: use a low temperature (0.2–0.35) for factual outputs like briefs and personas; medium (0.4–0.6) for ideation and hooks.
4. Model: run on Gemini (latest stable model in 2026). For high-length responses (detailed briefs), increase max tokens; for short hooks, cap tokens to 40–80.
5. Validate & iterate: run 3 variations per prompt with different temperatures and A/B the outputs in a campaign test cell.

Prompt engineering best practices (for marketers)

• System message: “You are a senior B2B demand-gen marketer who writes with measurable outcomes and crisp CTAs.”
• Output format: request JSON or bullet lists for machine-readability and easy ingestion into dashboards.
• Chain of thought: avoid asking for logics unless you want reasoning — keep execution prompts direct.
• Safety & brand voice: include explicit style constraints and banned phrases to prevent off-brand copy.
• Test matrix: always produce at least three variants and label them (Variant A, B, C) for rapid A/B testing.

50 Gemini prompts — ready-to-run, categorized and annotated

Copy-paste each prompt into Gemini, replace the {{placeholders}}, and follow the recommended settings. Use the system message suggested above for consistent voice.

Section A — Content briefs (5)

1. Prompt A1 — One-page content brief

   You are a senior B2B content strategist. Create a one-page content brief for {{asset_type}} (e.g., whitepaper, blog, webinar) promoting {{product}} to {{audience}}. Include: objective, KPIs, audience pain points, angle, 3 key messages, distribution plan (channels + timing), and 5 suggested CTAs. Output as JSON. Recommended settings: temperature 0.2, max tokens 800.

2. Prompt A2 — SEO-optimized blog brief

   Produce an SEO brief for a {{word_count}}-word blog targeting keyword "{{primary_keyword}}" and 3 LSI keywords. Provide: title options (3), meta description, H2 outline with short notes, and suggested internal links. Tone: authoritative, 3rd person. Recommended settings: temp 0.25.

3. Prompt A3 — Webinar brief & run sheet

   Build a webinar brief for topic "{{topic}}" aimed at {{audience}}. Include: learning objectives, 30/45/60-minute run sheets, speaker roles, slide count recommendations, pre/post-email sequences, and measurement plan. Output bullets + timings. Temp 0.2.

4. Prompt A4 — Case study brief

   Create a case study brief for customer {{customer_name}} showcasing a {{feature}} win. Include problem statement, metrics to validate, interview questions for the customer, and a 3-part narrative structure (challenge, solution, results). Temp 0.25.

5. Prompt A5 — Creative brief for agency

   Write a 1-page creative brief for an agency to produce a demand gen campaign promoting {{product}}. Include target persona, single-minded proposition, mandatory assets, brand dos/don’ts, success metrics, and a 6-week timeline. Temp 0.2.

Section B — Audience personas (5)

1. Prompt B1 — Data-driven persona

   Generate a data-driven persona for "{{persona_name}}" (job title, company size, industry). Provide: demographics, professional goals, top 5 pain points, buying triggers, typical objections, preferred content formats, and a short 30-word elevator pitch that speaks to them. Output as a bulleted persona card. Temp 0.2.

2. Prompt B2 — Persona for ABM target account

   For target account {{company}}, produce three personas (economic buyer, technical evaluator, user) with decision criteria, KPIs they care about, and one tailored message per persona. Recommend a 3-step outreach sequence for each. Temp 0.3.

3. Prompt B3 — Persona objection map

   Map top 6 objections for {{persona}} and recommend a content asset or microcopy to overcome each objection. Include evidence types (case study, benchmark, ROI calculator). Temp 0.25.

4. Prompt B4 — Persona microcontent list

   Produce 10 short social captions and 5 email subject lines tailored to {{persona}} focusing on {{pain_point}}. Keep captions under 120 characters. Temp 0.4.

5. Prompt B5 — Persona testing framework

   Create a 4-week test plan to validate persona assumptions about {{persona}}. Include hypotheses, channels, metrics, sample messaging and sample survey questions. Output table format. Temp 0.25.

Section C — Campaign ideation & tests (8)

1. Prompt C1 — Campaign concept generator

   Generate 8 campaign concepts to drive MQLs for {{product}} targeting {{industry}}. For each: single sentence concept, primary KPI, three creative directions, and suggested channels. Temp 0.45.

2. Prompt C2 — 3-week demand gen test

   Draft a 3-week split-test plan with two campaign variants (A/B) to test pricing messaging vs value messaging for {{product}}. Include audiences, budgets, landing page variations, success metrics, and a statistical significance checklist. Temp 0.3.

3. Prompt C3 — Rapid experiment ideas

   Provide 10 low-cost growth experiments (<$5k) to increase demo requests. Each idea must include experiment setup, expected lift range, and one tracking metric. Temp 0.5.

4. Prompt C4 — Multi-touch nurture flow

   Create a 7-step nurture flow for leads not ready to buy. Include channel sequence, timing, content types, and CTA progression from awareness to demo. Output as ordered list. Temp 0.3.

5. Prompt C5 — Channel mix optimizer

   Recommend an optimal channel mix for a 6-month demand gen plan targeting {{segment}} given a ${{budget}} monthly budget. Include expected CAC ranges and a rationale for channel weightings. Temp 0.3.

6. Prompt C6 — ICP expansion test

   Propose three ICP expansion hypotheses to grow pipeline. For each: new segments to test, required content, signals that indicate success, and recommended quick win creatives. Temp 0.35.

7. Prompt C7 — KPI dashboard spec

   Output a dashboard spec for campaign performance: metrics, formulas, refresh cadence, and recommended visualization for senior leadership. Include sample thresholds to flag underperformance. See observability best practices: Observability for workflow microservices. Temp 0.2.

8. Prompt C8 — Post-campaign retrospective

   Create a 1-page post-mortem template for campaigns: what to measure, attribution notes, lessons learned, and next experiments. Include 5 retrospective questions for the team. Use data-informed tactics from data-informed yield. Temp 0.25.

Section D — Creative hooks & headlines (8)

1. Prompt D1 — 30 headline variants

   Produce 30 headline variants for a landing page promoting {{feature}} aimed at {{persona}}. Use a mix of benefit, curiosity, and data-led angles. Shortlist top 5 with an explanation. Temp 0.55, max tokens 300.

2. Prompt D2 — 10 hook frameworks

   Give 10 social hook frameworks tailored to LinkedIn for {{audience}}. Each framework should be a template with blanks to fill. Temp 0.5.

3. Prompt D3 — Story arc for hero video

   Draft a 60-second hero video script (three beats) that highlights {{product}} solving {{pain}}. Include on-screen copy and suggested visuals. Temp 0.45.

4. Prompt D4 — Emotional vs rational hooks

   Provide 6 emotional and 6 rational headline hooks and indicate which buyer stage each serves (awareness, consideration, decision). Temp 0.5.

5. Prompt D5 — Benefit ladder

   Build a benefit ladder for {{product}}: feature → immediate benefit → business outcome → quantifiable metric. Provide copy suggestions at each level. Temp 0.3.

6. Prompt D6 — Microcopy for CTAs

   Generate 12 micro-CTAs for trial, demo, and resource download with variants for enterprise vs SMB. Keep under 6 words when possible. Temp 0.4.

7. Prompt D7 — Landing page hero test

   Create 3 hero section variations for a landing page (benefit-focused, ROI-focused, social-proof-focused). For each, include headline, subhead, 3 bullets, and primary CTA. Temp 0.35.

8. Prompt D8 — Tagline generator

   Produce 20 single-line taglines for {{brand}} that emphasize speed, reliability, or cost-savings. Label which core value each tagline reflects. Temp 0.5.

Section E — Ad copy & landing pages (6)

1. Prompt E1 — Google search ad + extensions

   Write 6 responsive search ad headlines and 4 descriptions for the keyword group "{{keyword_group}}" and suggest site link extension copy. Prioritize clarity and CTA. Temp 0.35.

2. Prompt E2 — Performance-focused ad creative

   Generate 4 short ad creatives for paid social (125 characters max) that emphasize a numeric outcome (e.g., "Save 30% time"). Include suggested UTM parameters and landing page headline. Temp 0.45.

3. Prompt E3 — Landing page conversion copy

   Provide full hero + 3 sections of conversion-focused copy for a product landing page. Include trust signals and one friction-reducing microcopy. Output in markdown-style headings for easy paste. Temp 0.3.

4. Prompt E4 — Paid social carousel

   Outline a 5-card carousel ad creative: card headlines, imagery guidance, and a narrative progression that drives to demo signups. Temp 0.45.

5. Prompt E5 — Offer phrasing test variants

   Produce 6 offer phrasing variants for trial signups (free trial, limited seats, demo + audit). Label which is urgency-led vs value-led. Temp 0.4.

6. Prompt E6 — Landing page QA checklist

   Create a QA checklist for a landing page launch: performance, analytics, tracking pixels, accessibility, and copy consistency. Temp 0.2.

Section F — Content repurposing & calendars (5)

1. Prompt F1 — Repurpose long-form to short

   Convert a {{word_count}}-word blog into: one-pager summary, 8 social posts, 3 email snippets, and 1 LinkedIn long post. Output labeled sections. Temp 0.4.

2. Prompt F2 — Quarterly content calendar

   Produce a 12-week content calendar for {{theme}} with one pillar asset and 3 distribution-supporting micro-assets per week. Include time estimates per asset. Temp 0.3.

3. Prompt F3 — Evergreen update plan

   Create a schedule and checklist to refresh an evergreen asset every 6 months. Include SEO, stats update, and new CTA tests. Temp 0.25.

4. Prompt F4 — Content amplification plan

   Provide a 6-step promotion plan to amplify a new whitepaper using organic, paid, and partner channels with expected reach estimates. Temp 0.35.

5. Prompt F5 — Repurposing ROI model

   Build a simple ROI worksheet to compare creating new content vs repurposing an existing asset. Include assumptions and formulas. Temp 0.2.

Section G — A/B tests & analytics (4)

1. Prompt G1 — Experiment hypothesis generator

   Given metric baseline {{baseline_metric}} and goal {{target_metric}}, propose 6 experiments with hypotheses, required samples, and minimum detectable effect. Temp 0.25.

2. Prompt G2 — Attribution model comparison

   Compare three attribution models (first touch, last touch, data-driven) for a demand gen funnel. List pros/cons and which model suits a 2026 B2B SaaS GTM. Temp 0.3.

3. Prompt G3 — SLA for data handoff

   Draft an SLA between marketing and analytics for campaign tracking: required fields, delivery cadence, and acceptance criteria. Temp 0.2.

4. Prompt G4 — Conversion rate optimization checklist

   Produce a prioritized CRO checklist for landing pages: heatmaps, load speed, form fields, trust signals. Include a diagnostic flow to find the top friction point. Temp 0.25.

Section H — Email & nurture sequences (4)

1. Prompt H1 — 6-email nurture series

   Write a 6-email nurture sequence for leads that downloaded {{asset}}. Include subject lines, preview text, body with clear CTAs, and suggested send cadence. Tone: consultative. Temp 0.35.

2. Prompt H2 — Re-engagement campaign

   Produce a 3-email re-engagement campaign for dormant leads with personalization tokens and one progressive profiling ask. Temp 0.4.

3. Prompt H3 — Sales handoff email

   Draft a short, data-backed handoff email for sales with lead context, top 3 selling points, and suggested discovery questions. Temp 0.25.

4. Prompt H4 — Email subject line bank

   Give 40 subject lines split across 4 buckets: curiosity, urgency, social proof, value. Label which are best for cold vs warm audiences. Temp 0.5.

Section I — Social & short-form (3)

1. Prompt I1 — 10 LinkedIn carousel ideas

   Produce 10 LinkedIn carousel concepts about {{topic}} with card-level headlines and suggested visuals. Temp 0.5.

2. Prompt I2 — Short video script bank

   Create 12 short-form video scripts (15–30s) for product demos, user tips, and myth-busting. Include hook, 2 supporting beats, and CTA. Temp 0.45.

3. Prompt I3 — Social listening sentinel

   Draft 10 monitoring rules to capture signals of buying intent on social (keywords, hashtags, competitor mentions) and suggested responses. Temp 0.3.

Section J — Team templates & onboarding (2)

1. Prompt J1 — Prompt onboarding doc

   Produce a 1-page onboarding doc for new marketers using this Gemini prompt library onboarding doc (J1). Include how-to-run steps, naming conventions, quality checklist, and escalation path for brand/legal review. Temp 0.2.

2. Prompt J2 — Prompt versioning policy

   Create a prompt versioning policy: semver rules for prompts, change logs, review cadence, and rollback triggers. See docs-as-code approaches: prompt versioning policy (J2). Temp 0.2.

Practical workflow templates — integrate the library into ops

Here are two high-impact workflows to adopt immediately.

Workflow 1 — Weekly creative sprint (recommended cadence: weekly)

1. Day 1: Run 3 prompts for new briefs and 10 headline variants (use A1 + D1).
2. Day 2: QA top outputs, map to creatives, prepare A/B tests.
3. Day 3: Launch small paid tests (C2) and send email cohorts (H1 variants).
4. Day 5: Capture initial performance and iterate the next week.

Workflow 2 — Campaign experiment loop (recommended cadence: 4–6 weeks)

1. Week 0: Hypothesis + dashboard spec (G1 + C7).
2. Weeks 1–3: Run ads and landing page variants (E1, E3) and collect data.
3. Week 4: Analyze, run post-mortem (C8), and scale winners.

Measuring impact & proving ROI

To move AI from execution to trusted strategic support, attach measurement to each prompt outcome. For example:

• Content brief → time-to-publish reduction (baseline vs new), content leads per asset, and CAC by channel.
• Persona → conversion lift on targeted audience segments.
• Creative hooks → CTR and CVR changes against control.

Use the KPI dashboard spec (C7) to standardize metrics and the post-campaign retrospective (C8) to capture learnings. That aligns with the 2026 trend: teams trust AI for execution when outcomes are measurable and repeatable.

Governance, ethics, and when to call humans

AI excels at repeatable execution but you must set boundaries. Here are pragmatic guardrails:

• Human-in-the-loop: require human sign-off for strategic positioning, legal claims, and pricing statements.
• Bias checks: run persona outputs through a diversity and inclusion checklist.
• Data privacy: never include PII in prompts. Use anonymized or synthetic examples when training prompts.
• Audit logs: keep prompt versions and outputs for 90 days for compliance and learning.

Example — How Gemini Guided Learning helped a marketer upskill (context from 2025–26)

In late 2025, features like Gemini Guided Learning (reported by Android Authority) started making targeted in-app learning more accessible for marketers. Practically, that means teams can pair this prompt library with guided tutorials to shorten ramp time for new hires from months to weeks. Use the onboarding doc (J1) and prompt versioning policy (J2) to embed those learnings into your team's routine.

Advanced strategies & predictions for 2026–2027

• Expect tighter integration between Gemini and martech stacks (CDPs, MTA) — prompts that output JSON will be machine-ingestable and gain traction.
• AI will increasingly generate test-ready assets (multiple lengths, formats) reducing creative cycle time by up to 40% for teams that adopt prompt libraries and rapid iteration workflows.
• Trust will shift from execution to strategy as teams prove ROI with controlled experiments — aim to build 6–12 month evidence to expand AI’s remit into positioning.

Final checklist before running the prompts

• Set system message and brand voice.
• Choose temperature based on prompt type.
• Replace placeholders and request labeled outputs (JSON or bulleted lists).
• Run 3 variations and A/B test the best-performing outputs.
• Log prompt versions and outcomes in your knowledge base (use chain-of-custody practices for accountability).

Closing — take action this week

Start by running these three quick wins this week: (1) use Prompt A1 to create a one-page brief and cut production time by half; (2) run Prompt D1 to generate 30 headline variants and launch a headline A/B test; (3) use Prompt G1 to set a clear experiment hypothesis and tracking plan. Those actions will convert ad-hoc curiosity into measurable velocity.

“Treat your prompt library like a product — version it, measure it, and iterate.”

Ready to operationalize this Gemini library? Download the plug-and-play prompt pack, or book a short audit with our team to map these prompts into your tech stack and measurement framework.

Call to action

Get the prompts in a downloadable CSV and a ready-to-import JSON for Gemini: request the pack or schedule a 30-minute prompt-mapping session — start turning AI prompts into predictable demand gen outcomes in 2026.

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