CometThe Fastest Path to Agents That Work
vs
Fiddler AIThe Control Plane for Enterprise AI Agents
Comparison · MLOps Platforms · weekly run Nov 2
Comet vs Fiddler AI
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Comet is the stronger AI pick in MLOps Platforms: it has a visibility score of 13.6 versus 0.6 for Fiddler AI.
Choose Comet if…
- You want the brand AI engines rank higher (13.6 vs 0.6)
- AI answers describe it more positively (53% vs 0% positive)
- You need SOC 2 or ISO 27001 or ISO 9001 or GDPR coverage
- Free tier for individuals and small projects
Choose Fiddler AI if…
- You want a lower entry price ($0.002 vs $19)
- You need more native integrations (100+ vs 60+)
- You need SOC 2 Type II coverage
- Integrates with observability and logging tools
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Comet | Fiddler AI |
|---|---|---|
| Visibility score | 13.6% | 0.6% |
| Change vs last week | New | New |
| Rank in MLOps Platforms | #10 | #44 |
| Share of voice | 2.7% | 0.3% |
| Mentions this run | 19 | 2 |
| Positive in AI answers | 53% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Comet 0pp · Fiddler AI 0pp over 0 weekly runs.
Engine by engine
Comet leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
CometFiddler AI
Head to head in AI answers
0 engine answers name both brands
0Comet ranked higher
0Fiddler AI ranked higher
Features, pricing & fit
| Dimension | Comet | Fiddler AI |
|---|---|---|
| Pricing model | Usage-based | Usage-based |
| Entry price | Free; paid from $19 / mo | Free; paid from $0.002 / mo |
| Free plan | Yes | Yes |
| Deployment | Cloud, virtual private cloud, on-premises, or self-hosted open source | SaaS, VPC, or on-premises |
| Integrations | 60+ | 100+ |
| Compliance | SOC 2, ISO 27001, ISO 9001, HIPAA, GDPR | SOC 2 Type II, HIPAA |
| Support | Community (Slack and GitHub), Self-service (Ask AI and Opik MCP Server), Email support, Dedicated support team and SLAs | White-glove support with dedicated communication channels, Named Customer Success Manager on the Enterprise plan |
| Founded | 2017 | 2018 |
| Headquarters | New York, NY, United States | Palo Alto, California, United States |
| Employees | 51–200 | 51–200 |
| Funding | Series B · $70M raised | Series B extension · $100M raised |
| Best for | Developers and teams building LLM applications and AI agents who need tracing, testing and evaluation. | Enterprises deploying AI agents and predictive models, especially highly regulated industries such as financial services, healthcare, insurance and government. |
Plans side by side
Comet
Opik Open Source$0free
Opik Free Cloud$0free plan
Opik Pro Cloud$19month
Opik EnterpriseCustomcustom
MLOps Free$0free plan
MLOps Pro$19user/month
MLOps EnterpriseCustomcustom
Pros and cons
Themes from the AI answers that mention each brand
Comet
- Free tier for individuals and small projects
- Robust experiment tracking
- Great visualization tools
- Clear, publicly listed pricing
Fiddler AI
- Integrates with observability and logging tools
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Comet vs Fiddler AI”, https://slateindex.ai/compare/comet-vs-fiddler-ai, data of Nov 2, 2026. Licence: CC BY 4.0.