Portkey vs Sierra (2026): Pricing, Features & Verdict
Portkey is our pick, scoring 7.8/10 against 7.4/10 for Sierra on our AI Software criteria. Its biggest advantage: higher Cost score (7/10 vs 2/10). Only Portkey has a free plan.
Last updated: November 2026
Portkey
7.8/10
Portkey is an AI gateway and LLMOps control plane that routes, monitors, and governs requests to 1,600+ LLMs for engineering teams and enterprises.
Sierra
7.4/10
Sierra is an enterprise conversational AI platform that builds and runs customer service agents across chat, voice, SMS, WhatsApp and email.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 7.8/10 | 7.4/10 |
| Integration | 9/10 | 8/10 |
| Analytics | 9/10 | 8/10 |
| Customization | 7/10 | 9/10 |
| Ease of Use | 8/10 | 7/10 |
| Support | 6/10 | 8/10 |
| Cost | 7/10 | 2/10 |
| Scalability | 8/10 | 9/10 |
| Security | 8/10 | 9/10 |
| Output Quality | Not listed | 9/10 |
| Pricing | ||
| Free plan | Yes | No |
| Cheapest paid plan | $49/mo Production | Contact for pricing |
| Estimated cost for 10 users | Free Open Source | Contact for pricing |
| Features | ||
| AI Agents | Not listed | |
| Chatbots | Not listed | |
| Enterprise Controls | Not listed | |
| Knowledge Base Search | Not listed | |
| Text Generation | Not listed | |
| Voice and Audio | Not listed | |
| Workflow Automation | Not listed | |
| More features | ||
| API and CLI | Not listed | |
| Managed WordPress | Not listed | |
| Object Storage | Not listed | |
| Uptime SLA | Not listed | |
| Dedicated Servers | Not listed | |
| VPS Hosting | Not listed | |
| Shared Hosting | Not listed | |
Portkey vs Sierra cost by team size
| Team size | Portkey | Sierra |
|---|---|---|
| 1 user | FreeOpen Source | Contact for pricing |
| 5 users | FreeOpen Source | Contact for pricing |
| 10 users | FreeOpen Source | Contact for pricing |
| 25 users | FreeOpen Source | Contact for pricing |
| 50 users | FreeOpen Source | Contact for pricing |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Who Portkey and Sierra suit
Portkey fits startups and developers better; Sierra fits enterprise better.
| Audience | Portkey | Sierra |
|---|---|---|
| Startups | 7/10A free tier and a $49 Production plan keep the entry cost low. | 3/10Some venture-backed tech companies such as Ramp and Discord are customers, but costs are high for early-stage teams. |
| Developers | 9/10Setup takes a few lines of code with OpenAI-compatible SDKs, and there is a free tier and an open-source gateway. | 6/10The Agent SDK lets engineers define customer journeys as code. |
| Enterprise | 8/10The Enterprise plan adds SSO, RBAC, VPC deployment, and HIPAA/SOC 2 support, and the product is now part of Palo Alto Networks' Prisma AIRS. | 10/10Sierra sells annual contracts to large consumer brands and holds compliance certifications such as FedRAMP and HIPAA. |
| Customer Support Teams | Not rated | 10/10Built for customer service agents that resolve conversations across channels and hand off to human agents. |
| Financial Services | Not rated | 8/10Customers include Rocket Mortgage and SoFi, and it holds PCI DSS compliance. |
| Freelancers | Not rated | 1/10Contracts are estimated at about 150,000 USD or more, with no self-serve tier. |
| Government | Not rated | 4/10It lists FedRAMP, but no public sector customers are named. |
| Healthcare | Not rated | 5/10It lists HIPAA compliance, but no healthcare customers are named. |
| Mid-Market | Not rated | 5/10Larger mid-market firms can buy, but estimated six-figure contracts and the lack of a self-serve tier make it hard to justify. |
| SaaS Companies | 8/10Built for teams running production GenAI features across multiple LLM providers. | Not rated |
| Small Business | Not rated | 1/10There is no self-serve plan and no public pricing, so it is effectively out of reach. |
Which One Should You Choose?
Why choose Portkey
- Has a free plan (Sierra does not)
- Higher Cost score (7/10 vs 2/10)
- Higher Integration score (9/10 vs 8/10)
- Better fit for startups (7/10 vs 3/10)
- Better fit for developers (9/10 vs 6/10)
Why choose Sierra
- Higher Customization score (9/10 vs 7/10)
- Higher Support score (8/10 vs 6/10)
- Better fit for enterprise (10/10 vs 8/10)
Pros & Cons
Portkey
Pros
- Unified API covering more than 1,600 models, with automatic fallbacks, retries, and load balancing.
- Detailed logs and traces show the latency, cost, and retry path of each request.
- An open-source core and a free tier let developers try it before paying.
- Enterprise governance features include budgets, rate limits, RBAC, SSO, and audit logs, with VPC deployment available.
Cons
- Since the 2026 acquisition, paid plans route through Palo Alto Networks' Prisma AIRS, which brings uncertainty about future pricing and roadmap.
- You pay for the gateway on top of LLM provider costs, and provider billing stays separate.
- Below Enterprise, support is community-only, and the free plan keeps logs for just 3 days.
- It may be more platform than needed for small prototypes that want only a simple proxy.
Sierra
Pros
- Outcome-based billing means customers usually pay only for resolved conversations or other agreed results, not for each seat.
- Three build options cover both CX teams and engineers: the no-code Agent Studio, the code-first Agent SDK, and Ghostwriter for building agents from SOPs.
- One agent runs across chat, voice, SMS, WhatsApp, email and ChatGPT, keeping context between channels.
- Its list of compliance attestations is broad, covering SOC 2, ISO 27001, ISO 42001, HIPAA, PCI DSS and FedRAMP.
- It has a strong roster of enterprise customers, including SiriusXM, ADT, Rocket Mortgage and SoFi.
Cons
- There is no public pricing, and competitor estimates put annual contracts at about $150,000 or more.
- There is no self-serve or trial tier, so small teams cannot try it on their own.
- Implementation is largely vendor-led, which can make customers depend on Sierra's team for changes.
- There are few public reviews (7 on Gartner Peer Insights) to verify claims against.
- Some reviewers say voice quality still falls short of human level, and that complex telephony setups depend on how far the integration goes.
Not sold on either?
Frequently Asked Questions
Portkey scores higher on our AI Software criteria: 7.8/10 against 7.4/10 for Sierra. The largest gap is in Cost: 7/10 for Portkey and 2/10 for Sierra.
Portkey has a free plan; Sierra does not list one.
Portkey is the better fit for startups: we rate it 7/10 for them, against 3/10 for Sierra.
