Automated use-case ranking
LLM APIs for function calling.
LLM APIs ranked for function calling. Rankings update automatically from source-backed AI Radar signals. The ranking never invents prices, benchmark scores, model specs, release dates, or capabilities.
Candidates
13
matched automatically
Sources
23
distinct URLs
Modules
6
indexable
Updated
Jun 26, 2026
from best-of index
| # | Candidate | Type | Access | Fit | Updated | Why it matched | Evidence |
|---|---|---|---|---|---|---|---|
| 01 | OpenAI API OpenAI API service | service | Paid API | RDR100 | Jun 26, 2026 | Matched llm api, model api, function calling; 1 source link; official service signal; access model: Paid API | developers.openai.com |
| 02 | GrokBuildMJW/ironcladPython repository | repo | Open source | RDR60 | Jun 22, 2026 | Matched tool calling, structured output; 1 source link; access model: Open source; open weights signal | github.com |
| 03 | Google Gemini API Google API service | service | Paid API | RDR97 | Jun 26, 2026 | Matched llm api, model api, function calling; 2 source links; official service signal; access model: Paid API | ai.google.dev |
| 04 | Lim-Code: A VS Code AI Programming AssistantAI Coding | article | Pricing not verified | RDR63 | May 27, 2026 | Matched function calling, tool calling; 1 source link; access model: Pricing not verified | github.com |
| 05 | Anthropic Claude API Anthropic API service | service | Paid API | RDR86 | Jun 26, 2026 | Matched llm api, model api, function calling; 2 source links; official service signal; access model: Paid API | platform.claude.com |
| 06 | SpecAnchor v0.5.0-beta.1 Introduces Harness Context Control for AI Coding AgentsAI Coding | article | Pricing not verified | RDR64 | May 24, 2026 | Matched long context, context window; 1 source link; access model: Pricing not verified | github.com |
| 07 | NVIDIA NIM Model Catalog NVIDIA inference platform | service | Free endpoint | RDR81 | Jun 26, 2026 | Matched llm api, model api, inference api; 3 source links; official inference catalog signal; access model: Free endpoint | build.nvidia.com |
| 08 | xAI API xAI API service | service | Paid API | RDR81 | Jun 26, 2026 | Matched llm api, model api, inference api; 3 source links; official service signal; access model: Paid API | x.ai |
| 09 | Hugging Face Inference Providers Hugging Face model hub | service | Paid API | RDR78 | Jun 26, 2026 | Matched llm api, model api, inference api; 2 source links; official inference catalog signal; access model: Paid API | huggingface.co |
| 10 | OpenRouter API OpenRouter API service | service | Paid API | RDR78 | Jun 26, 2026 | Matched llm api, model api, inference api; 2 source links; official service signal; access model: Paid API | openrouter.ai |
| 11 | Fireworks AI Serverless Models Fireworks AI inference platform | service | Paid API | RDR77 | Jun 26, 2026 | Matched llm api, model api, inference api; 2 source links; official inference catalog signal; access model: Paid API | docs.fireworks.ai |
| 12 | Together AI Serverless Models Together AI inference platform | service | Paid API | RDR77 | Jun 26, 2026 | Matched llm api, model api, inference api; 2 source links; official inference catalog signal; access model: Paid API | docs.together.ai |
| 13 | kartikkabadi/opencode-go-proxyPython repository | repo | Open source | RDR58 | Jun 24, 2026 | Matched chat completions, responses api; 1 source link; access model: Open source; freshly updated | github.com |