// monthly report / citation-index
Citation Index — May 2026
The authoritative monthly ranking of which AI companies get cited by Perplexity, ChatGPT, Claude, and Google AI Overviews. Methodology: CCS v1.2. Updates monthly on the 1st.
Companies tracked
66
Avg CCS
52
Avg citation prob.
4074%
30d citations
3,059
Top 10 most cited
| # | Company | Category | CCS | Citation prob. | 30d cites | Trend |
|---|---|---|---|---|---|---|
| 1 | anthropic anthropic.com | models | 94 | 7800% | 6 | ● Stable |
| 2 | openai openai.com | models | 91 | 8200% | 3 | ● Stable |
| 3 | Vast.ai vast.ai | infra | 90 | 4800% | 192 | ● Stable |
| 4 | Perplexity perplexity.ai | agents | 89 | 7500% | 300 | ▲ Rising |
| 5 | Fireworks AI fireworks.ai | infra | 89 | 5200% | 208 | ● Stable |
| 6 | mistral mistral.ai | models | 87 | 6200% | 2 | ● Stable |
| 7 | cohere cohere.com | models | 86 | 5800% | 2 | ● Stable |
| 8 | Cerebras cerebras.ai | infra | 86 | 5500% | 220 | ● Stable |
| 9 | SambaNova sambanova.ai | infra | 86 | 4500% | 180 | ● Stable |
| 10 | cursor cursor.com | devtools | 85 | 6500% | 3 | ● Stable |
Movers this month
Perplexity
perplexity.ai · agents
PPLX 4101%
GPT 3058%
CLD 2015%
AIO 2015%
Crusoe
crusoe.ai · infra
PPLX 4657%
GPT 3103%
CLD 2467%
AIO 1466%
Baseten
baseten.co · infra
PPLX 3996%
GPT 4447%
CLD 2092%
AIO 2284%
Glean
glean.com · agents
PPLX 3089%
GPT 4428%
CLD 2760%
AIO 1912%
Harvey
harvey.ai · agents
PPLX 3381%
GPT 3460%
CLD 2387%
AIO 1330%
By category
Archive & data
- Q2 2026 full report — quarterly analysis with methodology
- Leaderboard JSON · Claims JSON · Stats JSON
- RSS feed for monthly updates
Generated 2026-05-30T19:42:20.741Z · grow.contact Citation Intelligence Platform