Models and inference
Call supported models through OpenAI-compatible or Anthropic-compatible APIs.Chat & Responses
Generate text with familiar request and response formats.
Model capabilities
Find models by operation, modality, parameter, and provider endpoint.
Provider routing
Choose a provider or let Planck route across compatible endpoints.
Tool calling
Let models request application-defined functions.
Structured JSON
Constrain model output to a schema your application can validate.
Media and data
Work with embeddings, reranking, images, video, audio, and files.
Reliability and controls
Apply production behavior without rebuilding each provider integration.Fallbacks
Understand eligible retries, provider failures, and fallback behavior.
Response caching
Reuse eligible gateway responses to reduce latency and cost.
Prompt caching
Reuse provider-side prompt context on supported endpoints.
Rate limits
Control request, cost, or property-based usage.
Prompt security
Detect prompt attacks inline and handle blocked requests.
Gateway headers
Configure supported request-level gateway behavior.
Observability
Connect model activity to the users, sessions, and application context that produced it.Requests
Inspect inputs, outputs, cost, latency, errors, and provider details.
Properties
Add consistent metadata for filtering and analysis.
Sessions
Group related calls into conversations and agent workflows.
Scores & feedback
Attach automated evaluations and end-user feedback to requests.
Datasets
Curate reusable request sets for evaluation and export.
Webhooks
Deliver completed request events to your systems.
Prompt management
Version, assemble, and deploy prompts independently from application releases.Prompt library
Create reusable, versioned prompt definitions.
Gateway deployment
Select and render managed prompts in gateway requests.
Prompt assembly
Understand templates, variables, messages, and runtime parameters.
Integrations
Use Planck as the request path, add it to an existing provider integration, or record non-model steps in a larger trace.Choose an integration
Compare gateway, automatic logging, manual logging, and custom traces.
Frameworks
Connect Codex, LangChain, Semantic Kernel, Vercel AI SDK, and more.
Custom traces
Record tools, retrieval, and application-specific operations.
Keep exploring
Guides
Follow end-to-end application and prompting walkthroughs.
API reference
Inspect gateway and platform endpoints in detail.