AetherGate vs Portkey AI Gateway: migration, costs and which to choose in 2026
Portkey AI Gateway is a observability and governance platform. Hosted observability and prompt workflows alongside an open-source gateway. The current website also uses PRISMA AIRS AI Gateway branding. AetherGate focuses on provider-direct BYOK text routing, configurable fallback chains and durable multi-model missions; it is not a replacement for every API or governance feature of this platform.
Executive Verdict: Which Should You Choose in 2026?
Choose Portkey AI Gateway for integrated prompt management, traces, evaluations and enterprise deployment options. Consider AetherGate when your requirement is the supported text-routing and mission workflow with your own provider accounts, and its subscription and operational limits fit. Keep the existing platform if you require capabilities the AetherGate migration cannot preserve.
When to Choose AetherGate
- Your workload fits the currently implemented nonstreaming text gateway and BYOK provider set.
- You want configurable routing, request attempt traces and durable multi-model missions in one control plane.
- A tested canary confirms the required policy and billing behavior before cutover.
When to Choose Portkey AI Gateway
- Integrated prompt management, traces, evaluations and enterprise deployment options
- You depend on its documented endpoints, integrations or governance controls that are not implemented in AetherGate.
Side-by-Side Comparison: AetherGate vs Portkey AI Gateway
Covering Pricing & Billing, Free Options, Routing Features, Speed, Model Accuracy, and Developer Usability.
| Category & Dimension | AetherGate | Portkey AI Gateway | Advantage |
|---|---|---|---|
Pricing and full operational cost Pricing & Billing | Paid control-plane subscription (see current pricing) plus direct provider inference | Free prototype tier; Production $49/month; Enterprise custom | Workload-Dependent |
BYOK billing Pricing & Billing | No AetherGate token markup; provider fees and subscription remain | Plan/log charges plus upstream inference | Workload-Dependent |
Free evaluation Free Option | Public demo; live BYOK requires an active subscription | Check the linked vendor pricing for eligible free tier or trial | Workload-Dependent |
API and routing scope Features & Routing | Nonstreaming text chat endpoint, configurable fallback/retries and missions | Hosted observability and prompt workflows alongside an open-source gateway. The current website also uses PRISMA AIRS AI Gateway branding. | Workload-Dependent |
Latency evidence Speed & Latency | Total duration logged; TTFT field estimated, not measured | Benchmark your configured route; no equivalent independent result here | Workload-Dependent |
Output quality Accuracy & Quality | Evaluate chosen model, prompt redaction and fallback outputs | Evaluate chosen model, transformations and routing outputs | Workload-Dependent |
Migration effort Usability & DX | Scoped key, supported model and text payload; test compatibility | Export required policies, endpoints and operational dependencies | Workload-Dependent |
Architecture: what changes in the request path?
Hosted observability and prompt workflows alongside an open-source gateway. The current website also uses PRISMA AIRS AI Gateway branding. AetherGate runs a Next.js/PostgreSQL control plane and makes server-side upstream text calls with encrypted provider credentials.
Migration checklist and rollback
- Export provider aliases, gateway configs, prompt versions, metadata and guardrail dependencies.
- Move inference routes separately from prompt-management and historical-trace workflows; a gateway replacement does not recreate those systems.
- Create an AetherGate account, add the supported upstream credentials and issue a scoped gateway key. Point a small text-only canary at https://aethergate.site/api/v1/chat/completions with the AetherGate key and a supported model identifier.
- Test actual outputs, redaction, allowed models, fallback credentials, timeout/error behavior and provider invoices. Retain the old route until acceptance checks pass; switch back if required functionality is missing.
Costs and operational trade-offs
Production includes 100k recorded logs/month with $9 per additional 100k requests; retention and required enterprise deployment influence cost.
Compare upstream inference, gateway fees, storage, guardrails, infrastructure and maintenance together. Provider invoices remain the billing source of truth; gateway catalog estimates may differ from negotiated rates.
Security and governance questions
The pricing page reserves custom security/data-residency requirements for Enterprise; free prototype and Production plans should not be treated as equivalent. AetherGate provides scoped keys, RPM controls and configurable regex redaction; this is not a compliance certification or complete DLP solution. Spend is updated after completion, so concurrent calls can exceed a nominal cap.
Confirm credential custody, content retention, upstream training policies, regional processing, account access and fallback destinations. Regex redaction can miss sensitive material and changes prompts; test representative inputs.
Benchmark criteria before committing
No independent comparison results are available. Use the same model/provider, region, payload and policies; measure end-to-end p50/p95/p99, error rate, throughput, timeouts, failover and cost. Separate cache hits and misses. AetherGate’s current TTFT field is estimated from total duration and must not be treated as measured streaming TTFT. Quality depends on prompt transformations, model version, routing and evaluation workload.
Primary sources and review date
Reviewed October 4, 2026. Prices and plan capabilities can change; confirm the selected plan before purchase.
- Current pricing / licensing
- Integration and operational documentation
- Architecture / policy documentation
AetherGate Pros & Cons
- +Provider-direct BYOK billing with a separate control-plane subscription
- +Configurable fallback/retry rules and request attempt traces
- +Encrypted provider credential vault and durable mission workflow
- Current gateway dispatch handles nonstreaming text messages; full tools, multimodal and provider-native API parity are not established.
- Logs and catalog-based costs are operational estimates; retention depends on deployment. No independent head-to-head performance benchmark or enterprise compliance attestation is published.
Portkey AI Gateway Pros & Cons
- +Integrated prompt management, traces, evaluations and enterprise deployment options
- +Hosted observability and prompt workflows alongside an open-source gateway. The current website also uses PRISMA AIRS AI Gateway branding.
- Production includes 100k recorded logs/month with $9 per additional 100k requests; retention and required enterprise deployment influence cost.
- Confirm plan-specific policy, retention and deployment requirements before migration.
Frequently Asked Questions: AetherGate vs Portkey AI Gateway
Can a gateway replacement preserve Portkey prompt management?
Not automatically. Export prompts and versions, identify every application dependency and test an explicit replacement. AetherGate routing alone does not recreate Portkey evaluations or historical traces.
Is AetherGate a good Portkey AI Gateway alternative?
It can fit a narrower provider-direct text-routing and mission workflow. Choose Portkey AI Gateway when you need integrated prompt management, traces, evaluations and enterprise deployment options; do not switch before testing required protocols, policies and billing.
Can I migrate from Portkey AI Gateway with only a base URL change?
Move inference routes separately from prompt-management and historical-trace workflows; a gateway replacement does not recreate those systems. AetherGate currently dispatches nonstreaming text; verify model naming, fields, errors and credentials rather than assuming full protocol compatibility.
How should I compare gateway speed and accuracy?
Use identical pinned models, prompts, regions and policies, record latency percentiles and errors, then score outputs on your own representative task set. There are no independent head-to-head results on this page.
Test AetherGate Side-by-Side with Your Own Provider Keys
Launch the interactive Control Plane, test PII guardrails and same-request failover in the Playground, or issue a scoped ag-live-... key in seconds.