Observability and evaluation platform for AI agents and LLM apps, with tracing, issue detection and experiments on a free plan.

Tuning Engines
Control plane that credentials, governs and tracks software AI agents and robots, with an OpenAI-compatible gateway.
What is Tuning Engines?
Tuning Engines is a management platform for the AI workers a company runs, covering both software agents and physical robots. Each worker is registered with an owner, given its own identity and scoped permissions, and monitored through a single control plane that combines compliance, security, observability and model tuning. Teams can use it as a governed gateway by pointing an OpenAI-compatible SDK at the Tuning Engines API, where policy checks, guardrails, PII redaction, model routing and per-request budget caps apply before a call runs. If they cannot change a model URL, a trace-only sidecar mode collects traces, tool calls, latency and spend without sitting in the request path, and this is currently the only mode offered for robots. Guides show how to route Claude Code, OpenCode, Cline, Roo and Aider through it, and the platform can export evidence for reviews against the EU AI Act, NIST AI RMF and SOC 2. The service is described as a beta, and prices are not published; the site invites visitors to book a demo.
Use cases
- Govern AI agent tool calls
- Cap AI spend per request
- Audit agent actions for compliance
- Route coding agents through one gateway
- Trace agent cost by team and outcome
- Redact PII before it reaches models
Who it's for
Why use Tuning Engines
- Gives each agent its own credentials and least-privilege permissions, so a single shared key does not cover every workflow.
- Checks policies before a call runs, which helps stop sensitive actions instead of only logging them afterwards.
- Ties spend to work sessions and outcomes, so cost can be read per team, task and worker rather than as raw token counts.
- Offers a trace-only start, so you can get visibility before changing any model endpoints.
- Produces audit evidence that maps to common frameworks, reducing manual collection for reviews.
Tuning Engines features
- Per-agent identity, credentials and scoped permissions
- OpenAI-compatible governed gateway for inference
- Policy-as-code checks and approval workflows
- PII redaction and guardrails before execution
- Per-key budgets and rate limits
- Sidecar and trace-only mode with no traffic change
- Work Sessions that tie spend to outcomes
- Model routing, failover and caching
- Evidence exports covering SOC 2, NIST AI RMF and the EU AI Act
- Request capture for fine-tuning and evaluation datasets
- Public OpenAPI 3.1 spec with MCP tool endpoints
Tuning Engines integrations
How to get started with Tuning Engines
- Sign up with an email address, and a tenant is created for your organization with you as owner.
- Create an inference API key, then enable a catalog model or connect your own provider deployment.
- Route calls through the governed gateway, or send traces from an existing agent in trace-only mode.
- Set policies, budgets, approvals and guardrails in the control plane.
- Review Work Sessions, spend, governance activity and outcome reports, then export evidence or datasets as needed.
Tuning Engines limitations
- The service is described as a beta, so features and pricing may change without notice
- Sidecar mode is the only option for robots today, and inline robot enforcement is listed as coming soon
- Pricing is not published; the site points to a demo
Tuning Engines pricing
Tuning Engines is sold on custom quotes, so its prices aren't published.
Prices can change and may vary by country or exclude tax. Check the official pricing page.
Tuning Engines alternatives
The main Tuning Engines alternatives listed on Debuly are Credo AI, Portkey, Helicone, Fiddler AI, Gram and OpenLIT. The table compares pricing and platforms; order is A–Z.
| Tool | Pricing | Starting price | Platforms |
|---|---|---|---|
| Tuning Engines | Contact sales | — | Web, API |
| Credo AI | Contact sales | — | Web, API |
| Fiddler AI | Freemium | $0, usage-based | Web, API, Self-hosted |
| Gram | Free trial | $0.35, usage-based | Web, API, CLI |
| Helicone | Freemium | $79/mo | Web, API, Self-hosted |
| OpenLIT | Open source | — | Web, CLI, API, Self-hosted |
| Portkey | Freemium | $49/mo | Web, API, Self-hosted |

Credo AI
Enterprise AI governance platform for discovering AI systems, assessing risk, enforcing policy and producing compliance evidence.
Contact salesVisit Credo AI (official site)
Fiddler AI
Control plane for enterprise AI agents: observability, evaluations, inline guardrails and governance for agentic and predictive models.
FreemiumVisit Fiddler AI (official site)
Gram
Speakeasy's platform for building, hosting and governing MCP servers, with agent session logging, risk scanning and usage-based billing.
Free trialVisit Gram (official site)
Helicone
Open-source LLM observability and AI gateway that logs requests, tracks cost and latency, and routes to 100+ models through one API.
FreemiumVisit Helicone (official site)
OpenLIT
Open-source, OpenTelemetry-native platform for tracing, evaluating and guarding AI agents, with cost and GPU monitoring
Open sourceVisit OpenLIT (official site)
Portkey
AI gateway with observability, guardrails, caching and prompt management for teams running LLM apps in production.
FreemiumVisit Portkey (official site)
Tuning Engines FAQ
How much does Tuning Engines cost?
The pages do not publish prices. The website offers a Book a demo option, and the terms describe the service as a beta whose pricing can change, so contact the vendor for a quote.
Does Tuning Engines have an API?
Yes. It exposes an OpenAI-compatible endpoint with chat completions, completions, responses, embeddings and messages routes, plus MCP tool endpoints. A public OpenAPI 3.1 spec is available for generating clients.
Can Tuning Engines work with Claude Code and other coding agents?
Yes. The docs include guides for pointing Claude Code at the governed gateway, and for connecting OpenCode, Aider, Cline, Roo and Continue.dev with the same API key.
What is the difference between gateway and trace-only mode?
Governed gateway mode routes model calls through Tuning Engines so it can govern, meter and bill usage. Trace-only mode keeps your own provider key and sends traces from a sidecar, SDK, hook or workflow, so nothing sits in the request path.
Does Tuning Engines support compliance reporting?
It can export audit-ready evidence for reviews against the EU AI Act, NIST AI RMF and SOC 2, and it records policy decisions and approvals for each worker and task.
What are alternatives to Tuning Engines?
Teams comparing options look at AI governance and gateway products such as Credo AI, Portkey, Helicone, Fiddler AI and OpenLIT, which each cover part of governing and observing AI systems.
Sources & verification
Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.
| Source | Type | Accessed |
|---|---|---|
| tuningengines.com/ | official | |
| app.tuningengines.com/docs/openapi | docs | |
| app.tuningengines.com/docs/getting-started | docs | |
| app.tuningengines.com/terms | official |
Image credits
- Logo: from tuningengines.com · fetched · Vendor trademark, used only to identify the product; removed on request
- Cover: none collected yet, so a generated tile is shown.
Spot an error? Report an issue with this listing. We also remove a logo or image on the owner's request.


