Automated use-case ranking
LLM APIs for function calling.
LLM APIs ranked for function calling. Rankings update automatically from source-backed AI on Radar signals. The ranking never invents prices, benchmark scores, model specs, release dates, or capabilities.
Candidates
5
matched automatically
Sources
7
distinct URLs
Modules
6
indexable
Updated
Aug 21, 2026
from best-of index
| # | Candidate | Type | Access | Fit | Updated | Why it matched | Evidence |
|---|---|---|---|---|---|---|---|
| 01 | OpenAI API OpenAI API service | service | Paid API | Score100 | Jun 26, 2026 | Matched llm api, model api, function calling; 1 source link; official service signal; access model: Paid API | developers.openai.com |
| 02 | Google Gemini API Google API service | service | Paid API | Score94 | Jun 26, 2026 | Matched llm api, model api, function calling; 2 source links; official service signal; access model: Paid API | ai.google.dev |
| 03 | WiseriaAI/pie-ai-agentTypeScript repository | repo | Open source | Score53 | Jul 12, 2026 | Matched function calling, tool calling; 1 source link; access model: Open source; open weights signal | github.com |
| 04 | Anthropic Claude API Anthropic API service | service | Paid API | Score83 | Jun 26, 2026 | Matched llm api, model api, function calling; 2 source links; official service signal; access model: Paid API | platform.claude.com |
| 05 | AtomicBot-ai/atomic-agentTypeScript repository | repo | Open source | Score69 | Aug 21, 2026 | Matched long context, context window; 1 source link; access model: Open source; open weights signal | github.com |