LlamaIndex
LlamaIndex connects your data to models through indexing, retrieval and query pipelines. Configure its OpenAI-compatible LLM with Opper's base URL and an Opper key, and ingestion, retrieval and synthesis run on any of 700+ models without touching the pipeline around them.
Build with LlamaIndex on Opper
LlamaIndex reaches Opper over the OpenAI-compatible endpoint. Point it at https://api.opper.ai/v3/compat with your Opper key and pick a model.
Get your API keyIn your code
import osfrom llama_index.llms.openai_like import OpenAILikellm = OpenAILike(model="anthropic/claude-fable-5",api_base="https://api.opper.ai/v3/compat",api_key=os.environ["OPPER_API_KEY"],is_chat_model=True,)
More apps on Opper
Mastra
Opper is a provider in Mastra's model router. Write a model string, set a key, and the agent runs through the gateway.
Frameworks
Opper built inVercel AI SDK
Our provider for the Vercel AI SDK, so generateText, streamText and tool calls run on any model behind one key.
Frameworks
@opperai/ai-sdk-providerLiteLLM
Reach Opper through LiteLLM's OpenAI-compatible provider, in the Python SDK or behind the proxy.
Frameworks
/v3/compat