AI Infrastructure & APIs comparison · 2026

Seldon vs Zep

Compare Seldon and Zep as AI Infrastructure & APIs tools on fit, pricing, and the capabilities that actually overlap in 2026. Pick Seldon for aI platform engineering leads in regulated enterprises who must serve, monitor and explain production models inside their own Kubernetes clusters instead of a vendor's hosted endpoint.. Pick Zep for teams giving a production customer-support agent persistent memory of a user's prior issues and stated preferences and fusing CRM, billing and product-event JSON into a single per-user graph an agent can query.

Updated Aug 23, 2026

Kubernetes-native MLOps and LLMOps serving, from open-source inference to enterprise governance

Starts at $0/month·AI Infrastructure & APIs

Agent memory at enterprise scale, built on temporal context graphs

Starts at $0/month·AI Infrastructure & APIs

At a glance

SeldonZep
CategoryAI Infrastructure & APIsAI Infrastructure & APIs
PricingStarts at $0/monthStarts at $0/month
Free tierYesYes
PlatformsKubernetes, Self-hosted / on-premise, AWS, Microsoft Azure, Google Cloud, Alicloud, DigitalOcean, OpenShift, Docker, LinuxWeb
Suitable forAI platform engineering leads in regulated enterprises who must serve, monitor and explain production models inside their own Kubernetes clusters instead of a vendor's hosted endpoint.Teams giving a production customer-support agent persistent memory of a user's prior issues and stated preferences and fusing CRM, billing and product-event JSON into a single per-user graph an agent can query
CompanySeldon Technologies LtdZep AI, Inc.
Founded20142023

How they differ

Shared AI Infrastructure & APIs rubric, filled from each listing. Not a score.

Model catalog

SeldonZep
Text modelsYesNo
Image modelsNot publishedNo
Video modelsNot publishedNo
Speech modelsNot publishedNo
Open-weight modelsYesNo
Pinned versionsNot publishedNot published

Serving

SeldonZep
One unified APIYesNo
OpenAI-compatible APINot publishedNo
Streaming responsesNot publishedNot published
Batch jobsNot publishedNot published
Provider fallbackNot publishedNot published
Published rate limitsNot publishedNot published

Build & tune

SeldonZep
Fine-tuningNot publishedNot published
EmbeddingsNot publishedNot published
Vector storeNot publishedNot published
RAG pipelinesYesLimited
Agent frameworkLimitedNo
Tool / function callingNot publishedLimited

Observe & control

SeldonZep
Usage dashboardLimitedYes
Per-request costsNot publishedNot published
Traces / loggingYesYes
EvalsLimitedNo
Prompt managementYesNot published
Zero-retention optionNot publishedLimited

Access

SeldonZep
Public APIYesYes
Official SDKNot publishedYes
Self-serve signupLimitedYes
Free trialNot publishedNot published
Team workspaceLimitedNot published
SSO / SAMLLimitedNot published
Mobile appsNot publishedNo
Browser extensionNot publishedNo
Self-host / on-premYesYes

Commercial

SeldonZep
Commercial licenseYesNot published
Usage-based pricingLimitedNot published
Invoice / PONot publishedNot published
SOC 2Not publishedYes
GDPR / DPANot publishedNot published
Audit logYesYes
Role-based accessLimitedLimited

Features

These listings describe different capabilities. What each one ships:

Only Seldon

  • Seldon Core 2 declares models and pipelines as Kubernetes custom resources
  • Automatic inference server selection, scaling, monitoring and audit logging from one manifest
  • Composable data-centric pipelines connecting models, processing steps, custom logic and monitors over Kafka
  • MLServer lightweight multi-framework inference server with REST and gRPC support
  • Open Inference Protocol compatibility across model types
  • A/B tests, canary deployments, shadow deployments and multi-armed bandits for production routing
  • Multi-model serving with LRU memory swapping and overcommit to provision more models than hardware allows
  • Real-time observability with every prediction logged and auditable via Prometheus, Grafana and custom dashboards

Only Zep

  • Temporal context graphs that record facts with a validity window
  • Fact invalidation when new information contradicts the graph, with old facts kept as history
  • Point-in-time queries: ask what is true now or what was true on a past date
  • Multi-source ingest from chat history, business data (JSON) and user interactions
  • Automated context assembly returning token-efficient context blocks
  • Observations: patterns, recurrences and co-occurrences detected across the graph
  • Provenance on every fact, traced back to the source episode
  • Context Lake architecture governing millions of context graphs as one system

Use cases

These listings describe different use cases. What each one ships:

Only Seldon

  • Serving real-time ML inference inside a regulated bank's own Kubernetes cluster
  • Running drift and outlier detection alongside live predictions in pharmaceutical model pipelines
  • Promoting a challenger model through canary or shadow deployment without downtime
  • Consolidating many small models onto shared inference servers to reduce GPU spend
  • Adding explainability to every prediction for audit and compliance review
  • Deploying generative AI workflows with prompt orchestration and guardrails on existing Kubernetes infrastructure
  • Standardizing model handoff between data science teams and platform engineering
  • Keeping inference and data on-premise where cloud egress is not permitted

Only Zep

  • Giving a production customer-support agent persistent memory of a user's prior issues and stated preferences
  • Fusing CRM, billing and product-event JSON into a single per-user graph an agent can query
  • Answering point-in-time questions such as what a customer's plan or preference was on a specific date
  • Reducing prompt token spend by replacing full chat transcripts with an assembled context block
  • Auditing why an agent said something by tracing the underlying fact back to its source episode
  • Detecting behavioural patterns, such as repeat upgrade timing, and feeding them to an agent as Observations
  • Running agent memory inside a regulated customer's own VPC via Bring Your Own Cloud
  • Exposing agent memory to IDEs and assistants through the Memory MCP Server

Integrations

These listings describe different integrations. What each one ships:

Only Seldon

  • Prometheus
  • Grafana
  • Kafka
  • Jaeger
  • Elasticsearch
  • Triton Inference Server
  • MLflow
  • Weights & Biases

Only Zep

Nothing exclusive in this list.

Plans

Seldon

  • Open Source (Seldon Core 2, MLServer, Alibi Detect, Alibi Explain) $0/mo or $0/yr

    Seldon Core 2 Kubernetes-native MLOps and LLMOps deployment engine · MLServer multi-framework inference server with REST, gRPC and Open Inference Protocol · Alibi Detect for outlier, adversarial and drift detection · Alibi Explain for local, global, black-box and white-box explanation methods · Self-hosted on your own Kubernetes cluster

  • LLM Module Custom quote

    Gen AI workflow deployment with prompt orchestration · Built-in and configurable guardrails for LLM deployment · Observability and production-ready scaling for generative workloads · Priced through a scheduled platform briefing; no public figure published

  • MPM Module Custom quote

    Model Performance Metrics for classification and regression models · Real-time quality insights on production models · Detection of performance degradation before business impact · Priced through a scheduled platform briefing; no public figure published

  • Enterprise Platform Custom quote

    Oversight and governance for ML and LLM deployments at scale · Enhanced authentication and team controls · Audit trails for regulated industries · Priced through a scheduled platform briefing; no public figure published

Zep

  • Free $0/mo or $0/yr

    10,000 credits per month (no rollover or auto top-up) · 2 projects · Memory MCP Server seat · Custom entity/edge types · Variable rate limits depending on service-wide load · Lower priority Episode processing · Community support

  • Flex $125/mo or $1250/yr

    50,000 credits per month included, then $25 per 10,000 credits · Auto top-up at 20% (10,000 credits / $25) · 30-day credit rollover · 600 requests per minute · 5 projects · 5 Memory MCP Server seats · 10 custom entity/edge types · API logs retained 1 day · Unlimited memories and retrieval users · Community support · Cloud deployment

  • Flex Plus $375/mo or $3750/yr

    200,000 credits per month included, then $75 per 40,000 credits · Auto top-up at 20% (40,000 credits / $75) · 60-day credit rollover · 1,000 requests per minute · 10 projects · 15 Memory MCP Server seats · 20 custom entity/edge types · Observations, custom extraction instructions, webhooks, analytics · API logs retained 7 days · Unlimited memories and retrieval users · Priority support

Seldon strengths

  • Seldon Core 2, MLServer, Alibi Detect and Alibi Explain are open source, so evaluation costs nothing but cluster time
  • Seldon is cloud-agnostic and tested across AWS EKS, Azure AKS, Google GKE, Alicloud, DigitalOcean and OpenShift, which supports on-premise and sovereign deployments
  • Seldon's multi-model serving with LRU memory overcommit lets teams host more models than GPU memory would normally permit
  • Seldon plugs into an existing stack including Prometheus, Grafana, Kafka, Jaeger, Elasticsearch, Triton, MLflow, Weights & Biases, Istio, Envoy, Argo CD and Flux
  • Seldon ships experimentation primitives such as A/B tests, canaries, shadow deployments and multi-armed bandits rather than leaving routing to custom code
  • Seldon covers explainability and drift natively through Alibi, which matters for regulated buyers

Watch-outs

  • Seldon publishes no pricing page at all, so the LLM Module, MPM Module and Enterprise Platform require a sales briefing before any cost is known
  • Seldon states on the homepage that modular design lets buyers "budget accurately and only pay for what you need," yet no public plan table supports that claim — a vendor contradiction worth flagging
  • Seldon's homepage carries two conflicting award claims on one page: "Top Open-Source AI Deployment Tool 2026" and "Ranked #4 best open-source AI deployment tool of 2026"
  • Seldon leads with "Seldon is now TrueFoundry" while continuing to market Seldon-branded modules and roadmaps, leaving the contracting entity and long-term product naming unclear
  • Seldon requires an operational Kubernetes cluster, service mesh and Kafka knowledge, so there is no credit-card path to a hosted endpoint
  • Seldon lists a legacy Seldon Core alongside Seldon Core 2, so existing users face a migration decision
  • Seldon's testimonials on the homepage are attributed only to "Enterprise Customer" without named sources

Zep strengths

  • Zep publishes concrete p95 latency figures across graph sizes (148ms at 10K to 168ms at 100M) rather than a vague speed claim
  • Z
  • Temporal context graphs that record facts with a validity window
  • Fact invalidation when new information contradicts the graph, with old facts kept as history
  • Point-in-time queries: ask what is true now or what was true on a past date
  • Multi-source ingest from chat history, business data (JSON) and user interactions
  • Automated context assembly returning token-efficient context blocks
  • Observations: patterns, recurrences and co-occurrences detected across the graph

Watch-outs

  • Zep plan limits come from the published pricing table.
  • Zep packaging is recorded from the vendor pages available at analysis time.

Seldon vs Zep verdict

Who each product is for, then labeled AI takes. Not a generic winner.

Bottom line

Pick Seldon for aI platform engineering leads in regulated enterprises who must serve, monitor and explain production models inside their own Kubernetes clusters instead of a vendor's hosted endpoint.. Pick Zep for teams giving a production customer-support agent persistent memory of a user's prior issues and stated preferences and fusing CRM, billing and product-event JSON into a single per-user graph an agent can query.

Who Seldon is for

AI platform engineering leads in regulated enterprises who must serve, monitor and explain production models inside their own Kubernetes clusters instead of a vendor's hosted endpoint.

Kubernetes-native MLOps and LLMOps serving, from open-source inference to enterprise governance

Who Zep is for

Teams giving a production customer-support agent persistent memory of a user's prior issues and stated preferences and fusing CRM, billing and product-event JSON into a single per-user graph an agent can query

Agent memory at enterprise scale, built on temporal context graphs

AI take on Seldon

As of August 2026, Seldon remains a credible open-source production stack, though its TrueFoundry branding and undisclosed module pricing muddy the buying decision.

AI take on Zep

As of August 2026, Zep stands out where agent memory must be temporal, governed, and auditable rather than a thin wrapper around transcript retrieval.

Seldon vs Zep FAQ

Common questions when choosing between Seldon and Zep.

Is Seldon or Zep the better AI Infrastructure & APIs tool?

Pick Seldon for aI platform engineering leads in regulated enterprises who must serve, monitor and explain production models inside their own Kubernetes clusters instead of a vendor's hosted endpoint.. Pick Zep for teams giving a production customer-support agent persistent memory of a user's prior issues and stated preferences and fusing CRM, billing and product-event JSON into a single per-user graph an agent can query.

Which is cheaper, Seldon or Zep?

Seldon starts at $0/month. Zep starts at $0/month. Confirm current pricing on each vendor site.

Who should choose Seldon?

AI platform engineering leads in regulated enterprises who must serve, monitor and explain production models inside their own Kubernetes clusters instead of a vendor's hosted endpoint.

Who should choose Zep?

Teams giving a production customer-support agent persistent memory of a user's prior issues and stated preferences and fusing CRM, billing and product-event JSON into a single per-user graph an agent can query

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