Cognigy vs Sierra (2026): which should you pick?
As of Nov 12, 2026, Cognigy grades higher than Sierra: 1.8 against 1.6 out of 4.0.
Checked Nov 12, 2026 · graded Nov 12, 2026 by ToolGPA
Cognigy grades higher on platforms. They get the same grade on value for money, the free plan, features and ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Which one is for you
Pick Cognigy if
- Fits if you run a contact center and want voice and chat agents
- Works for a company that buys through a demo
Look elsewhere if
- Skip it if you want a price: none is published and the pricing page does not exist
- Not for you if you want to try it free, as no free plan or trial is shown
- Watch out: the site now uses the NiCE Cognigy name
Pick Sierra if
- Fits if you are a large brand with heavy customer service volume
- Makes sense if you want to pay by outcome rather than seat
Look elsewhere if
- Not for you if you want a price, as none is published
- Not for you if you want to try it, since there is no self-serve sign-up or free plan
- Skip it if you are small, because the site is aimed at large brands
- Watch out: no integrations are listed, so ask what it connects to
How we grade them
| 1.8GPACognigyWeak | 1.6GPASierraWeak | |
|---|---|---|
| Value for money | CNo prices are published and the pricing page does not exist, so it sits in the middle by default. | CNo price is published; the site says pricing is outcome-based and points to a sales call. |
| Free plan and trial | FNo free plan or self-serve trial is shown. | FNo free plan and no sign-up. The route is a sales conversation. |
| Features | CVoice, chat and messaging agents, agent assist and evaluation, with industry agents. | CAn agent builder, channels, insights and observability are listed, but nothing in the listing says how far each goes. |
| Ease of use | CNo store rating on record. Sold through demos, so rollout is a project. | CNo store rating on record, and a large brand has to onboard it with the vendor. |
| Platforms and integrations | BWeb only, with six named integrations and no API on record. | CWeb only, and the site lists no integrations. |
| Best for | AI agents for voice and chat contact centers | big consumer brands buying a service agent from the vendor |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Cognigy and Sierra. How we grade
Where they differ
- Cognigy also covers live chat.
In commonWebAI agentsAI support agentChatbots
At a glance
| Cognigy | Sierra | |
|---|---|---|
| Pricing | Paid | Paid |
| Starts at | Not published | Not published |
| Free plan | None | None |
| Free trial | None listed | None listed |
| Web | ||
| Made by | Cognigy | Sierra |
| Price read from | Not confirmed | Not confirmed |
| Checked | Nov 12, 2026 | Nov 12, 2026 |
Worth knowing
Cognigy
- No prices are published and the pricing page does not exist; the call to action is See a Demo.
- No free plan or self-serve trial is shown.
- The site now uses the NiCE Cognigy name.
Sierra
- No prices are published; Sierra says pricing is outcome-based and points visitors to a sales conversation.
- No self-serve sign-up or free plan is shown on the site.
- The site gives no list of integrations.
Key features
Cognigy
- AI agents for voice
- Voice agents are listed as a main use case, with voice connectivity as a platform capability.
- Chat and messaging agents
- Agents for chat and messaging channels, plus a live chat product.
- Agent assist
- An agent copilot that supports human agents in the contact center.
- Agent evaluation
- Platform capability for evaluating agents, alongside AI Ops and orchestration.
- Industry agents
- Pages for airlines, automotive, finance, healthcare, insurance, retail, telecom and utilities.
Sierra
- Ghostwriter agent builder
- Builds an agent from uploaded SOPs, transcripts and recordings or a plain-English description, with guardrails and multilingual support.
- Channels
- A single agent can be deployed on chat, SMS, WhatsApp, email, voice and ChatGPT.
- Insights
- Explorer analyzes conversations, Monitors flags the ones that need attention, and Experiments runs multivariate tests.
- Observability
- Shows each agent action, including tool calls and knowledge lookups, along with latency.
- Horizon
- Plans multi-step outcomes over days or months, using memory of the customer across conversations and systems.
Plans
Cognigy
Pricing could not be confirmed. See cognigy.com.
Sierra
Pricing could not be confirmed. See sierra.ai.
Common questions
Which is cheaper, Cognigy or Sierra?
As of Nov 12, 2026, Cognigy has no price we could confirm, and Sierra has no price we could confirm.
Which has a free plan, Cognigy or Sierra?
As of Nov 12, 2026, neither Cognigy nor Sierra has a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.