Agentic Index
Braintrust vs Freeplay (2026)
Choose Braintrust for engineering centric eval infrastructure with published self serve pricing, and choose Freeplay for a cross functional platform built so product and QA participate in prompt and eval workflows. That verdict is the Agentic Index coverage score, graded from each vendor's own published materials.
Braintrust offers a free Starter and Pro at 249 dollars a month, while Freeplay offers a free tier with paid plans via sales. Freeplay is earlier stage with less public pricing, so treat evaluation as a scoped pilot with success criteria; Braintrust is the safer default for engineering led teams.
On the Agentic Index agent infrastructure ranking, Braintrust and Freeplay both clear the bar: each documents all five production contract capabilities in full. 34 of the 186 vendors in the lane clear it. See the agent infrastructure ranking
This comparison is published by Agentic Index, an independent agentic AI vendor research platform. Braintrust and Freeplay 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 956 researched vendors. No vendor pays for placement and no vendor has reviewed this page. How this evidence is graded
Choose Braintrust if
- Engineers own the eval workflow and want deep experiment tooling
- Published pricing and self serve upgrade paths matter to procurement
- You want the platform with heavier enterprise validation behind it
Choose Freeplay if
- Product managers and QA need to run prompt experiments without engineering
- Unified prompt management, evals, and monitoring for mixed teams is the goal
- You are willing to pilot before committing and engage sales on pricing
| At a glance | Braintrust | Freeplay |
|---|---|---|
| Category | Agent infrastructure | Agent infrastructure |
| Entry price | Free Starter (1 GB data, 10K scores) · Pro $249/mo | Free sign-up · paid and Enterprise plans not readable |
| Free / trial | Free Starter plan, no card: 1 GB processed data, 10K scores a month, 14-day retention, unlimited users, $10 model credits a month. Qualifying startups can get 6 to 12 months of Pro free. | Free account sign-up, per Freeplay's docs |
| Pricing confidence | public exact | contact only |
| Feature | B Braintrust |
F Freeplay |
|---|---|---|
| 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 | Partial |
|
Workflow Orchestration Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps. |
Partial | 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. |
Full / Explicit | Full / Explicit |
| 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. |
No / Not documented | 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. |
Full / Explicit | 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. |
Partial | 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 | Full / Explicit |
|
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 |
F Freeplay |
|---|---|---|
|
Entry price Lowest public entry point |
Free Starter (1 GB data, 10K scores) · Pro $249/mo | Free sign-up · paid and Enterprise plans not readable |
|
Pricing confidence How public the numbers are |
Public, exact | Contact only |
|
Billing Primary billing axis |
usage | Not readable: the pricing page returns a site-not-found page; the docs name an Enterprise tier but no meter or price |
|
Variable cost Workload / overage exposure |
Medium variable cost | Medium 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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