GPT-5

OpenAI API

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API access to GPT-5.2, Codex models, Responses API, Agents SDK, and the full OpenAI platform

The OpenAI API provides pay-per-use access to the GPT-5 family (GPT-5.2 flagship at $1.75/$14 per MTok, GPT-5 at $1.25/$10, GPT-5 Mini at $0.25/$2, GPT-5 Nano at $0.05/$0.40), Codex-oriented models for agentic coding, reasoning models (o3, o4-mini), and GPT-4.1 with 1M token context. The Responses API (launched March 2025) replaces the older Assistants API with built-in tools including web_search, file_search, and computer_use. The Agents SDK provides a Python framework for building multi-agent systems with handoffs, guardrails, and tracing. Also includes image generation (DALL-E), audio (TTS/STT), embeddings, and the Sora 2 video generation API.

• ●GPT-5.2 flagship (71.8% SWE-bench), GPT-5, GPT-4.1 (1M context), o3/o4-mini reasoning
• ●Responses API with built-in web_search, file_search, and computer_use tools
• ●Agents SDK: Python framework for multi-agent systems with handoffs and guardrails

Anthropic Claude API

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Build with Claude Opus 4.6, Sonnet 4.6, and Haiku via the Anthropic API with MCP and adaptive thinking

The Anthropic Claude API provides pay-per-use access to the full Claude model lineup: Opus 4.6 (released Feb 5, 2026) for highest-depth reasoning at $5/$25 per MTok, Sonnet 4.6 (Feb 17, 2026) as the balanced default at $3/$15, and Haiku 4.5 for speed-optimized budget workloads at $1/$5. The API supports the Model Context Protocol (MCP) with 75+ enterprise connectors, adaptive thinking for extended reasoning, context compaction for efficient long conversations, tool use, prompt caching (write/read discounts), batch processing (50% savings), and deployment across Anthropic, AWS Bedrock, Google Vertex AI, and Azure AI Foundry.

• ●Claude model lineup: Opus 4.6 ($5/$25), Sonnet 4.6 ($3/$15), Haiku 4.5 ($1/$5)
• ●Model Context Protocol (MCP): open standard with 75+ enterprise connectors
• ●Adaptive thinking: extended reasoning mode for complex problem-solving

Google Gemini API

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Access Gemini 3 Flash (~78% SWE-bench at $0.50/$3), 3.1 Pro, and the full Gemini model family

The Gemini API exposes Google's full model lineup including Gemini 3 Flash (~78% SWE-bench at $0.50/$3 per MTok, the best price-performance coding model available), Gemini 3.1 Pro Preview (released Feb 19, 2026, at $2/$12), Gemini 2.5 Pro ($1.25/$10), and Gemini 2.5 Flash ($0.30/$2.50). All models support 1M token context windows, multimodal inputs (text, image, audio, video), and tools including function calling, code execution, Google Search grounding ($14 per 1K queries), URL context, and computer use. Google AI Studio provides free prototyping with Build Mode for rapid app development.

• ●Gemini 3 Flash: ~78% SWE-bench at $0.50/$3 per MTok (best price-performance)
• ●Gemini 3.1 Pro Preview: latest flagship (Feb 19, 2026)
• ●1M token context windows across all models (largest in the industry)