Use case

RAG API for retrieval, embeddings and generation

This page is for teams searching RAG API because they want to combine embeddings, retrieval and generation model access in one application workflow. PEKPIK provides model access for RAG stacks rather than replacing the vector database.

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Primary query

RAG API

Why teams search for this

Keep an OpenAI-compatible request pattern while comparing GPT, Claude, Gemini, DeepSeek, Qwen, Kimi, GLM and other model families.

Separate model access, observability, proxy ownership, fallback and billing when comparing options.

Use real prompts and production-like traffic assumptions instead of judging by model-list size alone.

Document model choices, limits, cost assumptions and fallback behavior before migration.

Where PEKPIK fits

Good fit

OKYour app needs configurable embedding and chat models for grounded answers.
OKYour team wants model flexibility without adding provider-specific SDK paths for every workload.
OKYou need a staging evaluation path before routing production traffic.

Check first

!A RAG API still needs a retrieval layer, source data quality and evaluation sets.
!Model IDs, request headers, streaming behavior, limits and provider-native features can differ across gateways.
!Do not move sensitive or high-volume traffic until quality, latency, error rate and cost are measured.

RAG API for AI Applications decision criteria

A useful comparison should separate operating model from feature claims so teams know what they will own after migration.

Criterion	Why it matters	What to verify
Operating model	Marketplace routers, self-hosted proxies, observability layers and managed gateways place work on different teams.	Confirm who owns provider accounts, keys, billing, uptime, fallback and support.
Compatibility	OpenAI-compatible requests can reduce migration work but do not remove endpoint testing.	Test request bodies, streaming, tools, image inputs, model IDs and error handling.
Production readiness	Prototype routing is different from customer-facing traffic.	Compare latency, failure modes, rate limits, support path and total workflow cost.

OpenAI-compatible example

base_url swap

from openai import OpenAI

client = OpenAI(
    base_url="https://aiapiv2.pekpik.com/v1",
    api_key="sk-...",
)

response = client.chat.completions.create(
    model="claude-opus-4-7",
    messages=[{"role": "user", "content": "Summarize this for a product team."}],
)

Suggested rollout

01

Start with real user questions and expected source documents before choosing models.
02

List required endpoints, model families, budget assumptions and fallback expectations.
03

Run the same prompt set through the current route and PEKPIK.
04

Promote only the workload segments where production criteria are met.

Related comparisons

RAG LLM API Plan retrieval, embeddings and generation with configurable model access. LLM API cost optimization Use model routing and measured workloads to control API spend. OpenAI-compatible API gateway Keep OpenAI-style requests while testing broader model families.

FAQ

Why search for RAG API?

Teams usually search this when the first gateway or provider path is no longer enough for production access, model flexibility, support, cost control or reliability planning.

Can PEKPIK be tested without a full rewrite?

For common OpenAI-compatible request patterns, the first test is usually a base URL, API key and model ID change, followed by endpoint-specific validation.