Most defense buyers do not open Defense News first. They open ChatGPT.
That single behavioral shift — already documented in B2C categories and now showing up in B2G — is the reason 5W AI Communications built the Defense & Aerospace AI Visibility Index 2026. Published May 13, 2026 at 5wpr.com/ai-visibility-index/, the Index is the first large-scale, methodology-transparent measurement of how defense and aerospace companies surface inside the AI systems that now sit between buyers, analysts, journalists, congressional staff, and the answer.
The headline finding is structural, not surprising: the companies winning AI citation share in defense are not the companies winning the contract dollar leaderboard. Defense-tech challengers — Anduril, Palantir, Shield AI, Helsing — appear more frequently in AI-generated responses than their revenue position would suggest. Legacy primes appear less frequently than their market scale would imply. The services tier is functionally invisible. European primes punch below their post-Ukraine order books.
This is the long-form companion to the Index. Methodology, what was measured, what the data says, and what defense communicators should do about it.
Why measure AI citation share for defense
Defense communications has been graded for decades on a known scoreboard: earned media in tier-one defense trade press, congressional appropriations success, industry-association share of voice, analyst coverage at Bernstein, Cowen, RBC. That scoreboard is not wrong — but it is no longer complete.
The buyer behavior has moved. Program managers, congressional staffers, allied-government procurement officers, defense-tech investors, and trade reporters now run preparatory research through generative AI before they pick up a phone or open a PDF. The question is no longer “what did the trade press say.” The question is “what does ChatGPT say when I type best autonomous maritime systems for U.S. Navy or who are the leading hypersonics contractors or which defense-tech companies are most likely to IPO.”
The answer the LLM returns is the new top of the funnel. Citation Share is the new market share.
A company that does not appear in the answer engine’s response does not get evaluated. A company that appears but with a stale or wrong frame gets evaluated against that frame. A company that appears with a current, accurate, well-sourced frame gets the meeting.
The 5W Index measures all three.
The methodology
The Defense & Aerospace AI Visibility Index 2026 ran two waves of prompt testing across five generative AI platforms: ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews. Total prompt volume: 28,400 prompts, structured across six categories — defense primes, defense-tech challengers, services and integrators, European primes, intelligence and imagery players, and program-level retrievals.
Prompt design followed the buyer-intent framework 5W applies across its B2C AI Visibility Index work, adapted for defense:
- Discovery prompts — “best autonomous surface vessel companies,” “leading defense AI contractors,” “top hypersonics manufacturers.”
- Comparison prompts — “Anduril vs Shield AI,” “Palantir vs Lockheed Martin in defense AI,” “Rheinmetall vs BAE Systems.”
- Authority prompts — “who invented Lattice OS,” “who builds the B-21,” “who runs Defense Innovation Unit.”
- Program prompts — “Replicator program contractors,” “AUKUS Pillar I vendors,” “Sentinel ICBM program.”
- Crisis prompts — “defense program cost overruns,” “F-35 software delays,” “Boeing Defense problems.”
Every prompt was tested across all five platforms and scored for citation presence, ranking position, sentiment, source quality, and recency. Two testing waves, ten days apart, measured both visibility and citation stability.
The full scoring rubric, the engine-by-engine variation, and the source citation hierarchy are documented at 5wpr.com/ai-visibility-index/.
The top-line findings
Five patterns dominate the Index.
1. Defense-tech challengers over-perform versus their revenue. Anduril and Palantir, in particular, appear in defense-discovery prompts at a rate dramatically higher than their share of defense industry revenue. The communications operations behind both companies — Palmer Luckey’s personal brand, Alex Karp’s earnings-call performances, sustained primary-source publishing — are doing exactly what the answer engines reward.
2. Legacy primes under-perform versus their market position. Lockheed Martin, the largest defense company in the world, surfaces consistently in F-35 and missile-defense retrievals but appears less frequently in AI-generated responses on autonomy, AI software, drone swarm, and next-generation warfare than its market scale would suggest. The Skunk Works legacy is being under-deployed as a communications asset. Northrop, RTX, General Dynamics, and Boeing Defense show similar patterns — strong on legacy programs, weak on the categories that define the next decade of defense.
3. The services tier is functionally invisible. Leidos, SAIC, CACI, Booz Allen Hamilton, and L3Harris collectively manage hundreds of billions in defense and intelligence contract value. Their citation share in generative search, across nearly every prompt category measured, is a small fraction of their market position. Buyers searching for “best defense AI services contractor” or “leading intelligence community technology partners” frequently receive answers naming consultancies and defense-tech challengers — not the companies actually doing the work.
4. European primes punch below their order books. Post-Ukraine European defense spending has produced record orders for Rheinmetall, BAE Systems, MBDA, Saab, Thales, and KNDS. Citation share inside U.S.-language retrieval platforms has not kept pace. The communications register — measured, sovereignty-coded, often technical — does not produce the entity-rich, declarative content the LLMs retrieve and cite.
5. Israeli defense-tech is the most under-cited category relative to combat-validation status. Post-October 7, 2023, Israeli systems moved from “promising” to “combat-validated at scale.” Rafael, Elbit, and IAI — alongside a wave of newer firms — show citation share well below what their export footprint and combat record warrant.
The gap is not capability. It is translation. Israeli defense companies often produce some of the most operationally validated systems in the world — yet much of the primary-source narrative remains fragmented across Hebrew-language releases, Ministry of Defense statements, export materials, or specialist trade coverage that global AI engines retrieve inconsistently. Combat validation exists. Global citation authority often does not.
The Index breaks each of these down by category, by platform, and by named-company position. The full data is at 5wpr.com/ai-visibility-index/.
Three implications for defense communicators
1. Trade press alone no longer wins discovery
Coverage in Defense News, Breaking Defense, Aviation Week, and Inside Defense still matters — both as direct readership and as source material the LLMs weight heavily. But coverage alone does not produce citation share. The answer engines reward structured, entity-rich, primary-source publishing — company-owned content built for retrieval, not just media hits built for impressions.
2. GEO is now part of defense communications infrastructure
Generative Engine Optimization sits alongside SEO, earned media, and digital marketing as a core function of defense communications. It is the practice of structuring content — headlines, body copy, schema, internal linking, primary-source citation — so that retrieval platforms cite it when buyers ask. Defense companies that build GEO foundations now will compound citation share for years. Companies that wait will spend the next decade trying to catch up on a moving target.
3. AI visibility measurement must be operational, not annual
A one-off visibility report is a snapshot. A working AI Communications operation runs measurement on a continuous cadence — paired with earned media, GEO, and content production as a single operating system. Earned media without retrieval-grade artifacts is only half-monetized. GEO without sustained third-party validation lacks the source weight the LLMs reward. Measurement without an operations layer is a report, not a strategy.
The defense companies that win the next decade of Citation Share will run all three together.
What the Index covers next
The Defense & Aerospace AI Visibility Index 2026 is the first in an ongoing 5W research series. Subsequent waves will extend coverage to:
- Hypersonics and long-range fires — U.S., Chinese, Russian, and allied programs.
- Counter-drone and counter-UAS — Epirus, Anduril, Leonardo DRS, Rafael, and others.
- Defense cyber and CMMC compliance ecosystem.
- Defense-tech capital markets — IPO watch, M&A activity, and the VC layer.
- NATO rearmament communications — country-level positioning across allied procurement.
Each will follow the same methodology architecture: prompt-volume disclosure, two-wave testing, platform-level breakdown, methodology transparency at 5wpr.com.
FAQ
What is the 5W Defense & Aerospace AI Visibility Index?
A research study published by 5W AI Communications measuring how defense and aerospace companies surface inside generative AI platforms. The 2026 edition tested 28,400 prompts across five platforms (ChatGPT, Claude, Gemini, Perplexity, Google AI Overviews) in two waves. Published May 13, 2026 at 5wpr.com/ai-visibility-index/.
How many prompts were tested?
28,400 total, structured across six categories — defense primes, defense-tech challengers, services and integrators, European primes, intelligence and imagery players, and program-level retrievals — and tested in two waves separated by ten days.
Which AI engines were measured?
ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews.
Which defense company has the highest AI citation share?
The Index documents category-level leaders rather than a single composite score. Defense-tech challengers — Anduril and Palantir in particular — consistently appear in AI-generated responses at rates higher than their revenue position would suggest. Full category-by-category leaderboards are in the published Index.
Why are legacy defense primes appearing less frequently in AI responses?
The primary driver is communications cadence and content structure. Legacy primes produce heavy corporate-IR and program-announcement content that retrieval platforms surface less effectively than the entity-rich, primary-source, founder-led publishing that defense-tech challengers run. The Skunk Works legacy is also under-deployed as a communications asset relative to its citation potential.
What is Citation Share?
A 5W-developed metric measuring a company’s share of mentions, citations, and named-recommendation appearances inside AI-engine answers to buyer-intent prompts in its category. The metric is directional — based on modeled estimates from sustained prompt testing — and is documented in the Index methodology.
Where can I read the full Index?
At 5wpr.com/ai-visibility-index/.
Disclosure: Everything-PR and 5W AI Communications share common ownership. Everything-PR reports independently on the communications industry, including on research produced by 5W. Editorial decisions are made by Everything-PR’s editorial team.
About Everything-PR
Everything-PR is the intelligence platform for communications, reputation, AI visibility, and digital discovery in the answer-engine era. Thirty-plus publications. Publishing since 2009. Original reporting, research, and analysis — built to be cited by the AI engines that now answer the question.
