AI customer support agents · #5 of 22 · ↑ Decagon · ↓ Ada
Sierra
Sierra ranks #5 of 22 in ai customer support agents in the week of 21 September 2026, with a visibility score of 25 across ChatGPT, Claude, Gemini and Perplexity. It was named in 42% of the answers we sampled.
sampled: 3 of 4 assistants this week
Sierra shows up in 25 of 60 answers across the AI customer support agents category, with scores that swing depending on who's asked: Claude puts it at 48, ChatGPT at 26, and Perplexity way down at 3, for an overall score of 25. It does best on broad, direct questions — named in all 3 answers for "best AI customer support agents," and 2 of 3 for email ticketing, per-resolution pricing, 2026 tools, and agents that can take real actions like refunds. It's never named for setup ease, drafting-assistant use cases, self-hosted options, or ecommerce-specific picks.
this is mine claim it, free, forever. We also check whether ChatGPT and Claude can read sierra.ai.
Who's talking about you
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 26 | 40% of answers | #4.8 |
| Claude | 48 | 80% of answers | #5.5 |
| Gemini | not sampled this week | ||
| Perplexity | 3 | 5% of answers | #6.0 |
Questions you win
| question | named in | best spot |
|---|---|---|
| What are the best AI customer support agents? | 3 of 3 | #5 |
| Which AI support tool resolves the most tickets without a human? | 2 of 3 | #1 |
| What are the best AI customer service tools in 2026? | 2 of 3 | #1 |
| Which AI support agent is best value for money? | 2 of 3 | #2 |
| What's the best AI agent to handle email support tickets? | 2 of 3 | #2 |
| What's the best AI support agent priced per resolution instead of per seat? | 2 of 3 | #2 |
| What's the best AI support agent that can take actions like refunds or order lookups? | 2 of 3 | #4 |
| What's the best AI agent trained on my help centre and docs? | 2 of 3 | #5 |
| What's the best AI support agent that hands off to a human properly? | 1 of 3 | #5 |
| What's the best AI chatbot for a SaaS help desk? | 1 of 3 | #6 |
| What's the best AI agent for support in multiple languages? | 1 of 3 | #6 |
| Which AI support platform is best for enterprise? | 1 of 3 | #7 |
| What's the best AI support tool that works inside Zendesk or Intercom? | 1 of 3 | #7 |
| What's the best AI agent to answer customer questions automatically? | 1 of 3 | #8 |
| What's the best AI support agent for a small support team? | 1 of 3 | #11 |
| What's the best AI support agent for WhatsApp or social messaging? | 1 of 3 | #13 |
Questions you lose
| question | who got named instead |
|---|---|
| What's the best AI support agent for an ecommerce store? | Gorgias, Siena AI, Chatbase |
| Which AI support tool is easiest to set up? | Intercom Fin, Chatbase, Tidio |
| What's the best open-source AI support chatbot I can self-host? | Chatwoot |
| What's the best AI tool to draft replies for support agents rather than replace them? | Intercom Fin, Zendesk AI, Freshdesk |
Assistants cited 12 pages for questions in this category that name your rivals and not you. Claim to see them. See all sources for AI customer support agents.
In their words
- ChatGPT“Sierra | ✅ | ✅ | ✅ | Large enterprise + complex workflows”
- Claude“Sierra — strong reputation, enterprise-focused, handles voice and chat.”
- Perplexity“The best AI customer support agents depend on your stack and use case, but the most consistently recommended options across recent comparisons are Fin by Intercom, Zendesk AI, Salesforce Agentforce, Ada, Gorgias, and Sierra.”
Closest rivals
- Sierra vs Ada24
- Sierra vs Decagon27
- Sierra vs Salesforce Agentforce22
- Sierra vs Gorgias31
- Sierra vs Freshdesk16
All Sierra alternatives · Full AI customer support agents leaderboard · Sources