01 /TOOLS / openai-responses
OpenAI Responses API
shipOpenAI's agent-building API — tools, web search and file search built in.
journal entry · observed by @whysanesanders · verified 2026-08-15
The most batteries-included agent API: hosted web search, file search and code interpreter without wiring infra. The Assistants API is deprecated in its favor — build here.
Known limitations
- Hosted-tool pricing (storage, search calls) sneaks up on you.
- Conversation state lives on OpenAI's side.
- Less controllable than explicit-graph frameworks like LangGraph.
Facts
- pricing
- paid
- price note
- pay-per-token; e.g. GPT-5 mini $0.25/1M input
- free tier
- no
- open source
- no
- api
- yes
- self-host
- no
- category
- agents
Models used
Receipts
Same sector — agents
CrewAI
Python framework for multi-agent crews — roles, tasks and processes.
agents
freemium · open source free; paid enterprise cloud
OSSAPIFREE TIER
LangGraph
Graph-based agent orchestration from LangChain — stateful and controllable.
agents
freemium · open source free; LangSmith Plus $39/seat/mo
OSSAPIFREE TIER
Manus
General-purpose autonomous agent that executes multi-step web tasks.
agents
freemium · free daily credits; Pro from $20/mo
FREE TIER