Agentic Index
Braintrust vs Opik (2026)
Both make evaluation the centre of the workflow rather than an afterthought, at 8 and 7 of 14. That verdict is the Agentic Index coverage score, graded from each vendor's own published materials.
Braintrust is evaluation and observability with self serve pricing, MCP support, human evaluation loops and dataset management, free starter then 249 dollars monthly for Pro. Opik from Comet is open source and free to self host, with tracing, LLM as a judge metrics, guardrails and an agent optimizer, plus a free cloud tier. Braintrust's human evaluation loops and dataset management are the more mature product; Opik's agent optimizer and open source licence are the reason teams pick it anyway.
This comparison is published by Agentic Index, an independent agentic AI vendor research platform. Braintrust and Opik are each graded against the same 14 capability Agentic Index taxonomy, from the vendor's own public materials under the Agentic Index verification standard, alongside 969 researched vendors. No vendor pays for placement and no vendor has reviewed this page. How this evidence is graded
Choose Braintrust if
- Documented coverage is broader and dataset management is the discipline you are missing.
- Human evaluation loops matter because automated scoring alone has not been enough.
- Self serve pricing means your team starts without procurement.
Choose Opik if
- Open source and free self hosting is a requirement, not a preference.
- An agent optimizer that acts on evaluation results closes the loop.
- Guardrails alongside evaluation consolidates two concerns into one tool.
| At a glance | Braintrust | Opik |
|---|---|---|
| Category | Agent infrastructure | Agent infrastructure |
| Entry price | Free Starter (1 GB data, 10K scores) · Pro $249/mo | Open source, free to self host; free cloud tier; Pro and Enterprise usage based |
| Free / trial | Free Starter plan, no card (1 GB data, 10K scores/mo, 14 day retention) | Apache 2.0 open source free to self host, plus a free managed cloud tier |
| Pricing confidence | public exact | public partial |
| Feature | B Braintrust |
O Opik |
|---|---|---|
| Action & orchestration | ||
|
Integrations & Tool Calling Ability to connect agents to real systems through native integrations, OAuth-authenticated actions, custom tools, APIs, webhooks, or MCP-compatible tools. |
Full / Explicit | Full / Explicit |
|
Workflow Orchestration Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps. |
No / Not documented | No / Not documented |
|
Triggers & Channel Coverage How agents wake up and where they work: schedules, webhooks, message events, CRM events, inbox events, chat, email, voice, and collaboration tools. |
No / Not documented | No / Not documented |
| Knowledge & context | ||
|
Knowledge Grounding & RAG Ability to ground agent behavior in company data through document ingestion, retrieval, external knowledge APIs, semantic search, or RAG layers. |
Partial | No / Not documented |
|
Memory & State Persistence Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer. |
No / Not documented | No / Not documented |
| Control & trust | ||
|
Human Oversight & Guardrails Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls. |
Full / Explicit | Partial |
|
Security, Identity & Governance RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy. |
Partial | Full / Explicit |
|
Observability & Auditability Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior. |
Full / Explicit | Full / Explicit |
|
Deployment & Data Residency Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting. |
Full / Explicit | Full / Explicit |
| Solution readiness | ||
|
Prebuilt Agents, Templates & Packs Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value. |
No / Not documented | No / Not documented |
| Platform extensibility | ||
|
Model Flexibility & Routing Ability to work across multiple foundation models, route tasks to different models, or let buyers bring their own providers and keys. |
Full / Explicit | Partial |
|
APIs, SDKs & MCP Extensibility Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems. |
Full / Explicit | Full / Explicit |
|
Testing, Debugging & Optimization Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment. |
Full / Explicit | Full / Explicit |
| Specialist automation | ||
|
Browser & Computer Use Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone. |
No / Not documented | No / Not documented |
Pricing snapshot
Sourced from the Index pricing dataset · open each vendor's profile for full detail.
| Pricing | B Braintrust |
O Opik |
|---|---|---|
|
Entry price Lowest public entry point |
Free Starter (1 GB data, 10K scores) · Pro $249/mo | Open source, free to self host; free cloud tier; Pro and Enterprise usage based |
|
Pricing confidence How public the numbers are |
Public, exact | Public, partial |
|
Billing Primary billing axis |
usage | spans and usage tier |
|
Variable cost Workload / overage exposure |
Medium variable cost | Low variable cost |
|
Free tier / trial Try before you buy |
Free tier
|
Free tier
|
|
Buying motion Self-serve vs sales call |
Mixed | Mixed |
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