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provider-http/streaming (HTTP Provider Streaming Example)
This example shows how to use OpenAI's streaming API via HTTP provider.
You can run this example with:
npx promptfoo@latest init --example provider-http/streaming
cd provider-http/streaming
⚠️ Streaming is not recommended for evaluations
Promptfoo supports streaming HTTP targets, but evals wait for full responses before scoring. That means:
- No progressive display during evals
- Extra parsing complexity for streaming formats (SSE/chunked)
- Similar end-to-end latency vs. non-streaming
Environment Variables
Required:
OPENAI_API_KEY- Your OpenAI API key fromhttps://platform.openai.com/api-keys
You can set it in your shell or in a project-level .env file (recommended):
export OPENAI_API_KEY="your-openai-api-key"
# or in .env
OPENAI_API_KEY=your-openai-api-key
Quick Start
-
Set your API key (or ensure
.envis populated) -
Run the evaluation (recommended):
npx promptfoo@latest eval -c examples/provider-http/streaming/promptfooconfig.yaml -
View results (optional):
npx promptfoo@latest view
For more HTTP provider configuration options, see the docs: https://promptfoo.dev/docs/providers/http.