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AI for Developers

242 AI models ranked for developer use cases. Scored by quality plus bonus for function calling, JSON mode, streaming, and reasoning - the capabilities that matter most when building with AI APIs.

How we rank: composite score (benchmark scores 90%, capabilities 5%, context window 5%) adjusted with use-case-specific capability bonuses.
242
Total
234
Function Calling
217
JSON Mode
242
Reasoning
14
Free

Developer Models - Ranked by Dev Score

#ModelScore
1Claude Fable 5Anthropic97
2Claude Fable 5 (batch)Anthropic97
3Claude Opus 5 (Fast)Anthropic95
4Claude Opus 5Anthropic95
5Claude Opus 4.8 (Fast)Anthropic95
6Claude Opus 4.8Anthropic95
7Claude Opus 4.7 (Fast)Anthropic95
8Claude Opus 4.7Anthropic95
9Claude Opus 4.7 (batch)Anthropic95
10Claude Opus 4.8 (batch)Anthropic95
11GPT-5.5 ProOpenAI93
12GPT-5.5 Pro (batch)OpenAI93
13GPT-5.5OpenAI93
14GPT-5.5 (batch)OpenAI93
15Gemini 3.1 Pro Preview Custom ToolsGoogle92
16Gemini 3.1 Pro PreviewGoogle92
17Gemini 3.1 Pro Preview (batch)Google92
18GPT-5.4 ProOpenAI92
19GPT-5.4 Pro (batch)OpenAI92
20GPT-5.4OpenAI92
21GPT-5.4 (batch)OpenAI92
22GPT-5.3-CodexOpenAI91
23GPT-5.2-CodexOpenAI91
24GPT-5.2 ProOpenAI91
25GPT-5.2 Pro (batch)OpenAI91
26GPT-5.2OpenAI91
27GPT-5.2 (batch)OpenAI91
28Claude Opus 4.6Anthropic90
29Claude Opus 4.6 (batch)Anthropic90
30GPT-5.6 Luna ProOpenAI89

Building with AI APIs

Function Calling & Tool Use

Let AI models call your functions and APIs. Essential for building agents, chatbots that take actions, and AI-powered workflows that interact with databases and external services.

Structured Output (JSON Mode)

Force AI responses into valid JSON for reliable parsing. Critical for data extraction, API responses, and any application that needs to process AI output programmatically.

Streaming for UX

Stream tokens as they generate for responsive user interfaces. Server-sent events (SSE) let you show AI responses in real-time - a must for any consumer-facing AI product.

Choosing the Right Model

Use premium models for complex reasoning and code generation. Use budget models for classification, extraction, and simple chat. Use open-source models for privacy and cost control.

Frequently Asked Questions

Coding assistants (Cursor, Copilot, Claude Code) provide IDE-integrated experiences. AI APIs give you raw model access for custom integrations. This page ranks the underlying models - the same models power both assistant products and direct API access.

Three main patterns: 1) IDE assistants for real-time code suggestions and chat. 2) CLI tools for terminal-based development. 3) API integration for automated code review, testing, and documentation in CI/CD pipelines. Most developers use all three.

Large context windows (128K+) are the single most important feature - they let models understand your entire codebase. Reasoning is second for complex debugging and architecture decisions. Function calling enables tool integration. Streaming provides real-time feedback.

Free models handle common tasks well (boilerplate, simple functions, documentation). For complex architecture, security-sensitive code, and large codebase navigation, premium models with stronger reasoning and larger context windows provide significantly better results.

AI for Developers - Best AI APIs & Models | LM Market Cap