Alternatives to Claude Opus 5

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

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

Alternatives

Claude Fable 5: Anthropic's most powerful model when cost is not the constraint.
GPT-5.6 Sol: OpenAI's more usable daily driver with a different reasoning profile.
Kimi K3: Open-weight 2.8T model with comparable agentic scores at much lower API prices.

Claude Fable 5

Anthropic's Mythos-class flagship made safe for general use, with 1M-token context, frontier coding and vision, days-long agentic autonomy, and $10/$50 per 1.

#Anthropic

3000000DR: 92AS: 95

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

Kimi K3

Models

Moonshot AI's open-weight 2.8T multimodal agentic model with 1M-token context, the world's first open 3T-class model rivaling closed frontier models.

#Moonshot AI

2500000DR: 70AS: 60