Salesforce Agentforce vs Sierra

as AI assistants see them, week of 2026-09-21

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Salesforce Agentforce and Sierra land close overall, with scores of 22 and 25 out of 100. Agentforce shows up in 20 of 60 answers, Sierra in 25 of 60. Head-to-head, Sierra gets named more often on 8 questions, Agentforce on 4, and they tie on 8. Both are named in every answer for "What are the best AI customer support agents?" Agentforce also sweeps "best AI customer service tools in 2026" and "best AI agent to answer customer questions automatically," 3 of 3 each. Claude scores both highest of the three assistants, while Perplexity rates them lowest, at 12 and 3 respectively.

Head to head

metric	Salesforce Agentforce	Sierra
score	22	25
questions won	12	16

By assistant

Salesforce Agentforce

assistant	score	named in, this week	usual spot, this week
ChatGPT	21	30% of answers	#4.0
Claude	32	50% of answers	#4.8
Gemini	not sampled this week
Perplexity	12	20% of answers	#5.3

Sierra

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

Where they differ

Only Salesforce Agentforce gets named for

What's the best AI tool to draft replies for support agents rather than replace them?

Only Sierra gets named for

Which AI support agent is best value for money?
What's the best AI support agent priced per resolution instead of per seat?
What's the best AI support agent that hands off to a human properly?
What's the best AI support tool that works inside Zendesk or Intercom?
What's the best AI support agent for WhatsApp or social messaging?

More comparisons

Not sold on either?

Scores count how often each assistant names a product, weighted by position. How the score works · Full AI customer support agents leaderboard