Compare Retell AI and Synthflow
At a Glance
Market Segments
Small-Business (87.5% of reviews)
Small-Business (93.0% of reviews)
Entry-Level Pricing
$0.07 1 Minute
Pay As You Go Per Month
Retell AI
Star Rating
(2,161)4.8 out of 5
Market Segments
Small-Business (87.5% of reviews)
Pros & Cons
Entry-Level Pricing
$0.07 1 Minute
Free Trial is available
Browse all 2 pricing plans
Synthflow
Star Rating
(1,013)4.5 out of 5
Market Segments
Small-Business (93.0% of reviews)
Pros & Cons
Entry-Level Pricing
Pay As You Go Per Month
Browse all 2 pricing plans
Summary
AI Generated Summary
AI-generated. Powered by real user reviews.
- G2 reviewers report that Retell AI excels in user-friendliness, with many praising its intuitive interface and straightforward setup process. Users have highlighted how easy it is to learn and implement, making it a great choice for those new to AI voice technology.
- Users say that Synthflow offers a very simple workflow, which is particularly beneficial for beginners. Reviewers appreciate the specific settings available to customize agents for unique use cases, making it a solid option for agencies serving diverse clients.
- According to verified reviews, Retell AI stands out for its reliability and versatility, with users noting its excellent voice quality and the ability to embed live demo calls on websites. This feature is especially valuable for businesses looking to build scalable AI voice agents.
- Reviewers mention that while Synthflow is easy to integrate with third-party tools, it may not match the same level of performance in voice recognition as Retell AI. Users have expressed a preference for Retell AI's superior voice capabilities, which enhance customer interactions.
- G2 reviewers highlight that Retell AI has a higher overall satisfaction score compared to Synthflow, reflecting a more positive user experience. This is supported by a larger volume of recent reviews, indicating that users are consistently pleased with its performance.
- Users note that while Synthflow provides a good range of features, Retell AI's comprehensive support and quality of assistance are often cited as superior. Reviewers appreciate the responsive support team at Retell AI, which contributes to a smoother user experience.
Pricing
Entry-Level Pricing
Retell AI
Pay as you go
$0.07
1 Minute
$0 to start.
Self-Serve
Start instantly.
- $10 Free credits
- 20 Free concurrent calls
- 10 Free Knowledge Bases
Synthflow
Pay as you go
Pay As You Go
Per Month
Launch instantly, scale when you’re ready. Ideal for builders, pilots, and small-scale deployments. $0 to start, usage-based billing after launch.
- Free to start, then usage-based
- Telephony: Synthflow Twilio/ Bring Your Own
- 5 concurrent calls, then $20/reserved concurrency
Free Trial
Retell AI
Free Trial is available
Synthflow
Free Trial is available
Ratings
Meets Requirements
8.9
57
8.4
950
Ease of Use
8.9
2,112
8.5
985
Ease of Setup
8.7
58
8.1
978
Ease of Admin
9.1
37
8.2
565
Quality of Support
8.3
50
7.8
818
Has the product been a good partner in doing business?
9.0
35
8.2
503
Product Direction (% positive)
9.5
51
9.4
954
Features by Category
Lead Facilitation
8.0
16
Feature Not Available
7.5
16
7.8
272
8.1
16
7.8
263
8.4
16
7.9
261
Organization
7.9
16
7.7
256
8.1
15
7.8
250
8.6
16
8.1
251
Performance Analysis
7.2
16
Feature Not Available
7.1
15
7.8
246
Sales Analysis
6.8
15
Feature Not Available
7.1
15
Feature Not Available
Generative AI
7.4
15
8.2
239
8.8
15
8.1
241
Agentic AI - AI Sales Assistant
7.8
15
8.2
75
8.0
15
8.0
73
8.6
15
8.0
74
7.1
15
8.0
73
8.2
15
8.3
73
7.7
15
8.2
74
8.2
15
8.3
75
Responses
8.5
23
8.1
607
8.7
23
7.9
606
8.4
23
8.2
604
Automation - AI Agents
8.6
20
8.1
553
8.8
20
8.1
563
8.5
21
8.0
560
7.5
19
7.7
533
8.1
19
7.9
530
Platform
8.1
24
8.1
605
8.4
24
8.2
593
8.1
23
8.0
578
Autonomy - AI Agents
8.1
19
8.1
528
8.2
19
8.1
525
8.5
20
8.1
532
8.1
19
8.1
530
Generative AI
7.1
20
8.1
572
8.3
22
8.0
562
Customization - AI Agent Builders
9.8
7
Not enough data
9.3
7
Not enough data
9.3
7
Not enough data
Functionality - AI Agent Builders
9.3
7
Not enough data
8.3
7
Not enough data
9.5
7
Not enough data
8.1
7
Not enough data
Data and Analytics - AI Agent Builders
9.3
7
Not enough data
8.8
7
Not enough data
9.0
7
Not enough data
Integration - AI Agent Builders
9.5
7
Not enough data
8.8
7
Not enough data
8.8
7
Not enough data
8.3
7
Not enough data
Voice Recognition - AI Voice Assistants
8.3
29
8.1
200
Speech Synthesis - AI Voice Assistants
8.4
29
8.1
199
8.3
28
8.0
197
8.5
27
8.1
193
Security and privacy - AI Voice Assistants
8.3
27
7.9
197
Compatibility - AI Voice Assistants
8.4
27
8.1
195
Customer Query Resolution - AI Customer Support Agents
8.6
12
Not enough data
8.8
12
Not enough data
8.3
12
Not enough data
9.2
12
Not enough data
8.9
12
Not enough data
Customer Interaction Automation - AI Customer Support Agents
8.8
11
Not enough data
8.8
11
Not enough data
8.8
12
Not enough data
8.6
12
Not enough data
Automation
8.6
13
Not enough data
8.5
12
Not enough data
7.9
12
Not enough data
Autonomy
8.2
12
Not enough data
8.2
12
Not enough data
8.6
12
Not enough data
8.5
12
Not enough data
Agentic AI - AI Agents
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Categories
Categories
Shared Categories
Retell AI and Synthflow are categorized as AI Voice Assistants, AI Agents For Business Operations, and AI Sales Assistant
Unique Categories
Retell AI is categorized as AI Agent Builders and AI Customer Support Agents
Synthflow has no unique categories
Reviews
Reviewers' Company Size
Retell AI
Small-Business(50 or fewer emp.)
Mid-Market(51-1000 emp.)
Enterprise(> 1000 emp.)
Synthflow
Small-Business(50 or fewer emp.)
Mid-Market(51-1000 emp.)
Enterprise(> 1000 emp.)
Small-Business
(50 or fewer emp.)
Mid-Market
(51-1000 emp.)
Enterprise
(> 1000 emp.)
Reviewers' Industry
Information Technology and Services
9.1%
Computer Software
8.5%
Consulting
7.3%
Marketing and Advertising
7.1%
Real Estate
6.3%
Other
61.6%
Marketing and Advertising
17.4%
Information Technology and Services
7.2%
Real Estate
6.9%
Computer Software
6.5%
Consulting
6.4%
Other
55.4%
Alternatives
Discussions
Retell AI has no discussions with answers
Synthflow has no discussions with answers