Best AI Sentiment Analysis Software in 2026
Updated
In short: Twilio Segment is ranked #1 of 22 as of 7 October 2026, ahead of InfoNgen and Symbl.ai. The best-ranked option with a free plan is InfoNgen. The lowest first paid tier on this page is Twilio Conversation Intelligence at $0.01/mo.
AI sentiment analysis software can help you examine opinion and emotional tone in supported inputs. Compared on aspect-based sentiment, emotion detection and custom categories, the options vary in the signals they let you explore. Also consider API access, real-time analysis and supported languages, along with free-plan availability and paid-from pricing. Twilio Segment, InfoNgen and Symbl.ai are among the names shown, alongside NLP Cloud and Sentriment. Think about the kinds of feedback you need to interpret and which listed analysis capabilities, language support and access options align with that work.
22 AI sentiment analysis software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
7 of the 22 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | Twilio SegmentWeb · Android · iPhone | Three bars | — | 3 of 6 | $120/mo | 6.6 | |
| 2 | InfoNgenWeb · Android · iPhone · Self-hosted · API | Three bars | — | 3 of 6 | Free | 6.5 | |
| 3 | Symbl.aiWeb · Android · iPhone · Self-hosted · API | Three bars | — | 3 of 6 | Free | 6.5 | |
| 4 | NLP CloudWeb | Two bars | — | 1 of 6 | Free | 6.4 | |
| 5 | SentrimentWeb · API | Two bars | — | 1 of 6 | €49/mo | 6.4 | |
| 6 | AlchemerAPI | Two bars | — | 0 of 6 | Free | 6.3 | |
| 7 | Twilio Conversation IntelligenceWeb | One bar | — | 1 of 6 | $0.01/mo | 6.2 | |
| 8 | Bazaarvoice Ratings & ReviewsWeb · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 9 | NextivaWeb · Windows · Mac · Linux · Android · iPhone · Extension | Two bars | — | — | 6 of 6 | $15/mo | 5.4 |
| 10 | SymantoWeb · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 11 | Talkdesk Interaction AnalyticsWeb | One bar | — | — | 1 of 6 | $85/mo | 5.3 |
| 12 | OpenText Contact Center AnalyticsWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 13 | RightResponse AIWeb | One bar | — | — | 1 of 6 | $10/mo | 5.1 |
| 14 | WonderflowWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 15 | Affective AIWeb · Self-hosted · API | One bar | — | — | 1 of 6 | £99/mo | 5.0 |
| 16 | CauliflowerWeb · Self-hosted · API | One bar | — | — | 1 of 6 | €79/mo | 5.0 |
| 17 | SentimentoWeb · API | One bar | — | — | 1 of 6 | $19/mo | 5.0 |
| 18 | Talkdesk CX CloudWeb | One bar | — | — | 1 of 6 | $85/mo | 5.0 |
| 19 | ThematicWeb · API | One bar | — | — | 1 of 6 | $2083.33/mo | 5.0 |
| 20 | SentiSumWeb · API | One bar | — | — | 1 of 6 | $8333.33/mo | 4.9 |
| 21 | unitQ ResearchWeb | No signal | — | — | 1 of 6 | — | 4.7 |
| 22 | CrestaNo platforms listed | No signal | — | — | 0 of 6 | — | 4.6 |
Compare all 22 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Emotion detection | Aspect-based sentiment |
|---|---|---|---|---|---|---|---|---|
| 1 | Twilio Segment | 6.6 | Free plan | $120/mo | — | — | — | — |
| 2 | InfoNgen | 6.5 | Free plan | Free | Yes | — | — | Yes |
| 3 | Symbl.ai | 6.5 | Free plan | Free | Yes | — | — | — |
| 4 | NLP Cloud | 6.4 | Free plan | Free | Yes | — | Yes | Yes |
| 5 | Sentriment | 6.4 | Free plan | €49/mo | Yes | — | Yes | Yes |
| 6 | Alchemer | 6.3 | Free plan | Free | Yes | — | — | — |
| 7 | Twilio Conversation Intelligence | 6.2 | No | $0.01/mo | — | — | — | — |
| 8 | Bazaarvoice Ratings & Reviews | 5.4 | No | — | — | — | Yes | Yes |
| 9 | Nextiva | 5.4 | No | $15/mo | — | — | — | — |
| 10 | Symanto | 5.4 | No | — | — | — | Yes | Yes |
| 11 | Talkdesk Interaction Analytics | 5.3 | No | $85/mo | No | — | — | — |
| 12 | OpenText Contact Center Analytics | 5.1 | No | — | — | — | — | — |
| 13 | RightResponse AI | 5.1 | No | $10/mo | No | 10 /mo | — | Yes |
| 14 | Wonderflow | 5.1 | No | — | — | — | — | — |
| 15 | Affective AI | 5.0 | No | £99/mo | No | — | Yes | — |
| 16 | Cauliflower | 5.0 | No | €79/mo | No | — | — | Yes |
| 17 | Sentimento | 5.0 | No | $19/mo | No | 19 /mo | — | Yes |
| 18 | Talkdesk CX Cloud | 5.0 | No | $85/mo | No | — | — | — |
| 19 | Thematic | 5.0 | No | $2083.33/mo | No | — | — | — |
| 20 | SentiSum | 4.9 | No | $8333.33/mo | No | — | — | — |
| 21 | unitQ Research | 4.7 | No | — | No | 99 /mo | — | — |
| 22 | Cresta | 4.6 | No | — | No | — | — | — |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI sentiment analysis software is ranked first on Freedom251?
Twilio Segment is ranked #1 of 22 with a score of 6.6. InfoNgen is second and Symbl.ai third.
How many of these have a free plan?
6 of the 22 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Twilio Conversation Intelligence has the lowest first paid tier we found: $0.01/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.