Alternatives to Claude Sonnet 5

These tools sit near Claude Sonnet 5. Compare features and pricing before you switch.

Open Claude Sonnet 5 listing · AI Tools Rankings 2026 | Hot & Featured

GPT-5.6 Sol

Models

OpenAI frontier flagship GPT-5.6 Sol: 1.05M context, effort up to max plus ultra, $5/$30 per 1M tokens.

#OpenAI

15000000DR: 95AS: 95

Claude Opus 5

Models

Anthropic's frontier Opus model with 1M-token context and effort-controlled reasoning, near-Fable-5 intelligence at Opus-4.8 pricing for agents and coding.

#Anthropic

2500000DR: 92AS: 95

Claude Haiku 4.5

Models

Claude Haiku 4.5: live cheap/fast Claude row at $1/$5 per 1M tokens and 200k context. Rechecked 2026-08-18. Not leftover 3 Haiku.

#Anthropic

2500000DR: 92AS: 95