Provider Capability Matrix

This folder documents pi-go’s coverage of upstream provider features. Each page contains a compatibility matrix, links to official provider documentation, and a list of current gaps in pi-go.

Providers covered:

• Anthropic — Messages API (pkg/ai/provider/anthropic)
• OpenAI Chat — Chat Completions API (pkg/ai/provider/openai)
• OpenAI Responses — Responses API (pkg/ai/provider/openairesponses)
• OpenRouter — Responses-API dialect of the same package (openrouter-dialect)
• Google — Gemini API (pkg/ai/provider/google)
• Claude CLI — claude subprocess (pkg/ai/provider/claudecli)
• Codex CLI — codex subprocess (pkg/ai/provider/codexcli)
• Cursor CLI — cursor subprocess (pkg/ai/provider/cursorcli)

Pages

Inputs & Outputs

• Streaming — SSE / event-stream consumption
• Multimodal Input — images, documents, audio, video
• Multimodal Output — image generation, audio (TTS)
• Citations — inline source attribution
• Structured Outputs — JSON mode and schema enforcement

Tools

• Function Calling — client-side tools, parallel calls, tool choice
• Server-Side Tools — web search/fetch, code execution, computer use, bash, text editor, file search, tool search, MCP

Reasoning & Optimization

• Reasoning — thinking budgets, encrypted reasoning passthrough
• Prompt Caching — TTL, breakpoints, session affinity

Sampling

• Sampling Controls — temperature, top-p/k, penalties, stop, seed, logprobs, safety

Auth & Lifecycle

• Authentication — API keys, OAuth, service accounts, cloud endpoints
• Files API — uploaded-file references
• Stateful Conversations — provider-managed session state
• Async Execution — Batch API, background mode
• Realtime / Live API — bidirectional streaming
• Fine-Tuning — custom-model training

Legend

Compatibility tables use:

• ✅ supported
• ⚠️ partial / preview / behind a flag
• ❌ not supported
• — not applicable

Where helpful, columns split into API (upstream support) and pi-go (wired up in this SDK), with caveats and file:line references in the Notes column.