Best AI Sentiment Analysis Software in 2026
Updated
In short: Alchemer is ranked #1 of 21 as of 4 October 2026, ahead of Sentriment and InfoNgen. The best-ranked option with a free plan is Sentriment. The lowest first paid tier on this page is Twilio Conversation Intelligence at $0.01/mo.
When you need to interpret opinions in text or other supported inputs, sentiment analysis software can help surface the signals that matter to your work. Compared on aspect-based sentiment, emotion detection and custom categories, these options also differ across API access, real-time analysis and supported languages. Free-plan availability and paid-from pricing provide additional comparison points. Alchemer, Sentriment and InfoNgen are among the tools shown. Consider which sentiment dimensions you need to identify, the languages your audience uses, and whether real-time processing or API access fits the systems where analysis will happen.
21 AI sentiment analysis software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
AI Sentiment Analysis Software, one module each. A lit port is something its maker publishes; 10 of the 21 on this page have a public API.
- 01 Alchemer API yesOSS not on recordFREE yesDOCS 7.4Free
- 02 Sentriment API yesOSS not on recordFREE yesDOCS 7.4€49/mo
- 03 InfoNgen API yesOSS not on recordFREE yesDOCS 7.3Free
- 04 Symbl.ai API yesOSS not on recordFREE yesDOCS 7.3Free
- 05 Bazaarvoice Ratings & Reviews API yesOSS not on recordFREE not on recordDOCS 6.9
- 06 Symanto API yesOSS not on recordFREE not on recordDOCS 6.9
- 07 Affective AI API yesOSS not on recordFREE not on recordDOCS 6.8£99/mo
- 08 Cauliflower API yesOSS not on recordFREE not on recordDOCS 6.8€79/mo
- 09 Sentimento API yesOSS not on recordFREE not on recordDOCS 6.7$19/mo
- 10 Thematic API yesOSS not on recordFREE not on recordDOCS 6.7$2083.33/mo
- 11 Twilio Segment API not on recordOSS not on recordFREE yesDOCS 6.0$120/mo
- 12 NLP Cloud API not on recordOSS not on recordFREE yesDOCS 5.9Free
- 13 Twilio Conversation Intelligence API not on recordOSS not on recordFREE yesDOCS 5.6$0.01/mo
- 14 Nextiva API not on recordOSS not on recordFREE not on recordDOCS 5.4$15/mo
- 15 RightResponse AI API not on recordOSS not on recordFREE not on recordDOCS 5.4$10/mo
- 16 Talkdesk CX Cloud API not on recordOSS not on recordFREE not on recordDOCS 5.4$85/mo
- 17 OpenText Contact Center Analytics API not on recordOSS not on recordFREE not on recordDOCS 4.9
- 18 Wonderflow API not on recordOSS not on recordFREE not on recordDOCS 4.9
- 19 Cresta API not on recordOSS not on recordFREE not on recordDOCS 4.8
- 20 unitQ Research API not on recordOSS not on recordFREE not on recordDOCS 4.8
- 21 SentiSum API not on recordOSS not on recordFREE not on recordDOCS 4.6
Compare all 21 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Emotion detection | Aspect-based sentiment |
|---|---|---|---|---|---|---|---|---|
| 1 | Alchemer | 7.4 | Free plan | Free | Yes | — | — | — |
| 2 | Sentriment | 7.4 | Free plan | €49/mo | Yes | — | Yes | Yes |
| 3 | InfoNgen | 7.3 | Free plan | Free | Yes | — | — | Yes |
| 4 | Symbl.ai | 7.3 | Free plan | Free | Yes | — | — | — |
| 5 | Bazaarvoice Ratings & Reviews | 6.9 | No | — | — | — | Yes | Yes |
| 6 | Symanto | 6.9 | No | — | — | — | Yes | Yes |
| 7 | Affective AI | 6.8 | No | £99/mo | No | — | Yes | — |
| 8 | Cauliflower | 6.8 | No | €79/mo | No | — | — | Yes |
| 9 | Sentimento | 6.7 | No | $19/mo | No | 19 /mo | — | Yes |
| 10 | Thematic | 6.7 | No | $2083.33/mo | No | — | — | — |
| 11 | Twilio Segment | 6.0 | Free plan | $120/mo | — | — | — | — |
| 12 | NLP Cloud | 5.9 | Free plan | Free | Yes | — | Yes | Yes |
| 13 | Twilio Conversation Intelligence | 5.6 | No | $0.01/mo | — | — | — | — |
| 14 | Nextiva | 5.4 | No | $15/mo | — | — | — | — |
| 15 | RightResponse AI | 5.4 | No | $10/mo | No | 10 /mo | — | Yes |
| 16 | Talkdesk CX Cloud | 5.4 | No | $85/mo | No | — | — | — |
| 17 | OpenText Contact Center Analytics | 4.9 | No | — | — | — | — | — |
| 18 | Wonderflow | 4.9 | No | — | — | — | — | — |
| 19 | Cresta | 4.8 | No | — | No | — | — | — |
| 20 | unitQ Research | 4.8 | No | — | No | 99 /mo | — | — |
| 21 | SentiSum | 4.6 | No | — | No | — | — | — |
Is your platform 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 Inferse?
Alchemer is ranked #1 of 21 with a score of 7.4. Sentriment is second and InfoNgen third.
How many of these have a free plan?
6 of the 21 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 on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.