Comparison

Everstack vs Bifrost

Bifrost is a fast, cleanly licensed Go gateway from Maxim AI, and on raw proxy overhead it is theirs to win. The difference worth pricing is which capabilities sit behind the Enterprise tier: guardrails, cluster mode, adaptive load balancing, RBAC, audit logs and SSO are all on the paid side.

EverstackEverstack
vs
BifrostBifrost
View pricingRead documentation

What is Bifrost?

Bifrost is an open source AI gateway from Maxim AI, Apache-2.0 licensed with 7,675 GitHub stars as of August 2026. It is a Go binary built for low overhead, claiming under 100 microseconds at 5,000 requests per second, deployable via Docker, Kubernetes or a single binary. The OSS tier is free forever; guardrails, clustering, RBAC and SSO are Enterprise.

Why teams choose Everstack

  • Guardrails, RBAC and log export ship under Apache-2.0
  • Cluster deployment is a configuration, not a tier
  • Agent runtime, sandboxes and evaluations share the control plane

Bifrost: Strengths & Limitations

Strengths

  • Serious engineering on raw performance. Bifrost claims under 100 microseconds of overhead at 5,000 requests per second, and it is a Go binary built for that.
  • Apache-2.0 across the repository, with 7,675 GitHub stars as of August 2026 and commits landing daily.
  • Genuinely simple self-hosted deployment: Docker, Kubernetes, or a single Go binary.
  • The OSS tier is free forever and includes core gateway functionality, routing, observability and governance primitives.
  • Backed by Maxim AI, so the gateway sits inside a wider evaluation and observability product if you want that.

Limitations

  • Guardrails are enterprise-only, per Bifrost's own pricing page.
  • Cluster Mode for high availability and Adaptive Load Balancing with real-time health monitoring are enterprise-only, which puts the reliability features on the paid tier.
  • RBAC, audit logs, log exports, SSO via SAML and OIDC, and vault integrations are enterprise-only.
  • It is a gateway. Agent execution, sandboxes, memory and human review are separate systems.

Everstack advantage

Guardrails and RBAC in the free buildHigh availability without a tier upgradeRuntime and evals on the same planePublished pricing at every tier

The facts, side by side

Licence, deployment model and list price, taken from each vendor's own documentation. Every source is linked at the bottom of this page.

FactEverstackBifrost
LicenceApache-2.0 across the repository.Apache-2.0, verified against the LICENSE file in maximhq/bifrost. Clean, with no enterprise directory in the tree.
GuardrailsIncluded, enforced in the request path.Listed as an Enterprise capability on Bifrost's pricing page, covering content safety and real-time protection.
High availabilityCluster deployment is configuration.Cluster Mode and Adaptive Load Balancing with real-time health monitoring are both Enterprise.
RBAC, audit logs and log exportIncluded.All three are Enterprise.
SSOIncluded.Enterprise SSO via SAML and OIDC.
Published pricingStarter $0, Build $20/month, Scale $100/month, Enterprise custom (August 2026).OSS free forever for self-managed deployments, Enterprise custom pricing for VPC, on-premises and air-gapped environments (August 2026).
Raw gateway overheadNot benchmarked against Bifrost. We are not going to publish a comparison we have not run.Bifrost claims under 100 microseconds of overhead at 5,000 requests per second, and 50x faster than LiteLLM.
Agent runtime and isolated executionStateful sessions, tools, approvals, child agents, plus Docker, Firecracker and Kubernetes sandboxes.Out of scope.
Community sizeSmaller.7,675 GitHub stars as of 31 August 2026, pushed the same day.

Licence and stars from the maximhq/bifrost repository and the GitHub API, tier boundaries from getmaxim.ai/bifrost/pricing, all on 31 August 2026. Performance figures are Bifrost's own published claims and we have not independently benchmarked them.

Feature comparison

Direct capability comparison across key dimensions

FeatureEverstackBifrost
Gateway
OpenAI-compatible endpoint
Multi-provider routing
Basic load balancing
Adaptive load balancing with health monitoringEnterprise
GuardrailsEnterprise
Reliability
Cluster mode for high availabilityEnterprise
Governance
Role-based access controlEnterprise
Audit logsPlannedEnterprise
Log exportEnterprise
SSO via SAML and OIDCEnterprise planEnterprise
Runtime
Stateful agent sessions
Isolated code execution
Quality
Datasets and evaluation runs
Performance
Published sub-100 microsecond overhead claim

The same job, in both products

Working code rather than adjectives. Each snippet follows the quickstart published by the product it belongs to.

Route a chat completion

Both are OpenAI-compatible, so this is a base URL change either way. Integration effort is not a differentiator here.

Everstack

call.py
from openai import OpenAIimport osclient = OpenAI(    base_url="https://{instance}.{region}.everstack.ai/openai/v1",    api_key=os.environ["EVERSTACK_API_KEY"],)response = client.chat.completions.create(    model="gpt-4o-mini",    messages=[{"role": "user", "content": "Summarise this report"}],)

Bifrost

call.py
from openai import OpenAIimport osclient = OpenAI(    base_url="http://localhost:8080/openai",    api_key=os.environ["OPENAI_API_KEY"],)response = client.chat.completions.create(    model="gpt-4o-mini",    messages=[{"role": "user", "content": "Summarise this report"}],)

Key evaluation questions

What to ask when comparing Bifrost to Everstack

QuestionEverstackBifrost
Are guardrails available without paying?Yes, in the Apache-2.0 build.No. Guardrails are Enterprise.
Is high availability a tier?No, cluster deployment is configuration.Yes. Cluster Mode and Adaptive Load Balancing are Enterprise.
Which gateway is faster?Unknown. We have not benchmarked against Bifrost and will not claim a number.Bifrost publishes sub-100 microsecond overhead at 5k RPS.
Does it run agents and sandboxes?Yes.No, it routes their model calls.

Feature-by-feature analysis

Where each product is genuinely stronger, row by row

Where the tier line falls

Everstack wins
Everstack

Guardrails, RBAC, log export and clustering are all in the Apache-2.0 build. SSO enforcement is an Enterprise entitlement on Everstack Cloud, and a tenant-facing audit log is planned rather than shipping, so on those two rows Bifrost Enterprise is ahead of us.

Bifrost

All of those are Enterprise on Bifrost's pricing page, including Cluster Mode and Adaptive Load Balancing.

Why Everstack

Putting high availability and guardrails on the paid tier means the free build is a development gateway more than a production one. That is a legitimate business model, but worth pricing before you adopt.

Raw performance

Bifrost wins
Everstack

Not benchmarked against Bifrost. We are not going to publish a comparison we have not run.

Bifrost

Claims under 100 microseconds of overhead at 5,000 requests per second, and 50x faster than LiteLLM.

Why Bifrost

If proxy overhead is a hard constraint, this is theirs to win and you should measure it yourself against your own traffic.

Licence structure

Close call
Everstack

Apache-2.0 across the repository.

Bifrost

Apache-2.0 across the repository, with no enterprise directory.

How to choose

A genuine tie. Both projects keep the licence clean and put commercial differentiation in the product tier rather than the source tree.

Scope past the request

Everstack wins
Everstack

Agent sessions, isolated sandboxes, memory, workflows and evaluations on the same control plane.

Bifrost

A gateway. Maxim AI provides evaluation and observability alongside it, but agent execution and sandboxing are not in scope.

Why Everstack

Decides whether you are buying one system or several, and whether a trace follows the work past the request.

Moving from Bifrost to Everstack

Both are OpenAI-compatible proxies, so applications move with a base URL change. The work is re-expressing provider configuration and deciding what to do with anything that depended on Bifrost enterprise features you were paying for.

  1. 1

    Point applications at the new endpoint

    A base URL and API key change. No other application edit.

  2. 2

    Re-express provider and routing config

    Bifrost provider entries and load balancing settings map to Everstack provider routes and routing policy.

  3. 3

    Re-create governance objects

    If you were on Bifrost Enterprise, RBAC roles, audit log destinations and SSO configuration need re-declaring. If you were on OSS, this is capability you gain rather than port.

  4. 4

    Benchmark before you commit

    Bifrost publishes aggressive performance numbers. If gateway overhead is a hard constraint for you, measure both against your own traffic rather than trusting anyone's table, including ours.

What breaks

  • Bifrost-specific configuration files and its plugin surface have no direct equivalent.
  • Cluster mode topology does not map across.
  • Anything integrated with the wider Maxim AI product stays there.

What does not carry over

  • Historical request logs held by Bifrost.
  • RBAC role definitions and audit log history.
  • Vault integration configuration.

Read this part first

When to choose Bifrost instead

Bifrost is a well-engineered gateway with a clean licence. Pick Bifrost over Everstack when any of these is true.

  • Raw gateway overhead is your binding constraint. Bifrost is built for that and publishes numbers to back it; we have not benchmarked against them and will not claim to beat them.
  • Routing is the whole problem and the OSS tier covers you. If you do not need guardrails, RBAC or cluster mode, Bifrost OSS is free forever and very fast.
  • You want a single Go binary to deploy. That is a genuinely simpler operational story than a platform.
  • You are already using Maxim AI for evaluation and observability, in which case the gateway fitting into that stack is worth more than anything on this page.
  • You want a clean Apache-2.0 licence with no enterprise directory. Bifrost has exactly that, and so do we, so this is a tie.

Frequently asked questions

Common questions about choosing between Everstack and Bifrost

Ready to get started?

See how Everstack compares to Bifrost for your specific use case.

View pricingRead docs

Sources & References

maximhq/bifrost repositoryBifrost licence (Apache-2.0)Bifrost pricingEverstack licence (Apache-2.0)

Last reviewed: August 31, 2026. This comparison is for informational purposes and reflects our understanding of competitor capabilities based on publicly available documentation.

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