VectorAxis vs Portkey
Portkey and VectorAxis solve the same problem and the feature lists rhyme. The honest split: Portkey is the more established product with formal compliance certifications and a self-hostable open-source gateway, so it is the safer answer for a regulated enterprise that must run the gateway inside its own VPC. VectorAxis is the better answer if you want to start calling models without opening provider accounts at all — our platform keys resell OpenAI, Anthropic, xAI and DeepSeek on prepaid credits — and if you want guardrails and multimodal endpoints included rather than assembled.
This comparison is written and maintained by VectorAxis. We are not affiliated with, or endorsed by, Portkey. Claims about Portkey were taken from their public documentation and pricing on — if we have something wrong, tell us and we will correct it.
What Portkey is
Portkey is an AI gateway and LLMOps platform. It offers a unified API across LLM providers, routing, retries, fallbacks, caching, guardrails, prompt management and observability — available as an open-source self-hosted gateway, a free Developer tier, a paid Production tier, and an Enterprise plan with private-cloud deployment.
At a glance
| VectorAxis | Portkey | |
|---|---|---|
| Provider coverage | 56 providers routable through one OpenAI-compatible endpoint. | Unified API across a large provider set; Portkey markets 200+ LLMs. |
| Bring your own keys | Yes — BYOK virtual keys, encrypted at rest (AES-256-GCM), per-key provider allowlists and spend limits. | Yes — virtual keys over your own provider credentials. |
| Buy credits instead of provider accounts | Yes. Platform keys resell OpenAI, Anthropic, xAI and DeepSeek at a 5% service fee on provider rates — no provider account or provider billing setup needed. | Not offered — you bring your own provider credentials. |
| Caching | Exact-match and semantic caching (pgvector cosine similarity), per-request TTL, opt-in per call. | Simple and semantic caching; semantic caching is listed on the paid Production tier. |
| Guardrails | 31 built-in validators across PII, security (prompt injection, jailbreak, secrets), content safety, format, and quality. Deterministic and LLM-judge checks, applied on input and output. | Guardrails on all tiers; custom guardrails listed as an Enterprise feature. |
| Routing | Single, weighted load-balance, fallback chains (up to 5) and conditional routing, configurable per request or as a saved config. | Routing, retries, load balancing and fallbacks. |
| Multimodal at the gateway | Audio (transcription, translation, speech), images, files, batches and the Responses API through the same gateway and the same key. | Primarily chat/completions-oriented; check their docs for current multimodal coverage. |
| Self-hosting | No. Managed service only. | Yes — open-source gateway you can self-host, plus private-cloud/VPC deployment on Enterprise. |
| Compliance certifications | None claimed today. | Claims SOC 2, ISO 27001, GDPR and HIPAA. |
| Free tier | 1 workspace, 5 virtual keys, 10k logs/month, 3-day log retention, 60 rpm. | Developer tier: 10,000 recorded logs/month, 3-day log retention, 3 prompt templates. |
| Paid entry tier | Pro at $40/month: 5 workspaces, 100k logs/month, 30-day retention, 600 rpm, unlimited prompt templates and guardrails, semantic caching. | Production at $49/month: 100,000 logs/month, 30-day log retention, unlimited prompt templates, semantic caching; $9 per additional 100k requests. |
When Portkey is the better choice
There are real cases where we are not the right answer. If any of these describe you, use Portkey:
- You need the gateway inside your own infrastructure. Portkey’s gateway is open source and self-hostable, and their Enterprise plan offers private-cloud and VPC deployment. VectorAxis is a managed service — if your prompts legally cannot transit a third party, this is the deciding factor and you should stop reading here.
- You need certifications on paper today. Portkey claims SOC 2, ISO 27001, GDPR and HIPAA. We do not claim these. If your procurement process requires them, that is a hard gate and we will not pretend otherwise.
- You are already deep into their ecosystem — prompt library, integrations, and dashboards your team relies on. The migration cost is real and a gateway is not usually where you want to spend it without a reason.
- You need the very long tail of providers. They market a larger catalogue than our 56. If the specific model you need is on their list and not ours, that settles it.
When VectorAxis is the better choice
- You want to skip provider accounts entirely. Platform keys let you buy prepaid credits and call OpenAI, Anthropic, xAI and DeepSeek at a 5% fee over provider rates — no separate OpenAI billing account, no Anthropic contract, one invoice. Portkey requires you to bring your own keys.
- You want guardrails included, not assembled. 31 validators ship in the box — PII detection, prompt-injection and jailbreak detection, secret-leak scanning, toxicity, topic restriction, schema validation — usable on input and output, on any plan.
- You want one gateway for more than chat. Audio, images, files, batches and the Responses API run through the same endpoint and the same key, so multimodal work does not need a second integration.
- You want per-model pricing you can read without signing up. Our rate table is public, and the service fee is a flat 5% on provider rates.
Common questions
Is VectorAxis a drop-in replacement for Portkey?
Both expose an OpenAI-compatible endpoint, so in the common case you change the base URL and the key and your existing OpenAI SDK code keeps working. What does not transfer automatically is configuration: prompt templates, routing configs and guardrail definitions have to be recreated. There is no automated importer today.
Can I self-host VectorAxis like Portkey’s open-source gateway?
No. VectorAxis is a managed service today and we have no self-hosted distribution. If running the gateway inside your own VPC is a hard requirement, Portkey’s open-source gateway is the better fit and we would rather tell you that up front.
Does VectorAxis have SOC 2 or HIPAA?
We do not claim SOC 2, ISO 27001 or HIPAA today. Portkey does. If your procurement requires a certification on paper, that is a real gap on our side. Virtual key credentials are encrypted at rest with AES-256-GCM, but encryption is not a certification and we will not present it as one.
What does the 5% platform fee apply to?
It applies only to platform keys, where VectorAxis supplies the provider credentials and you draw down prepaid credits. It is a 5% service fee on top of the provider’s own rate. If you bring your own provider keys (BYOK), you pay your provider directly and there is no per-token fee from us — you pay only for your VectorAxis plan.
How many guardrail validators does VectorAxis have?
31 in production, spanning PII detection, security (prompt injection, jailbreak, secret leakage, SQL restrictions, web sanitization), content safety (toxicity, NSFW, banned words, topic restriction), format and schema validation, and output quality. Some are deterministic checks; some use an LLM judge.