Pick a winner in each dimension — change your vote anytime.
Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).
Choose Grok 4.20 if you want agents that genuinely need 2M tokens of context. Choose Kimi K2.6 if you want a flagship-feel open-weight generalist.
In our editorial scoring, Kimi K2.6 leads in 3 of five dimensions (agentic ability, value for $ and reliability), while Grok 4.20 leads in 0. On price, Grok 4.20 runs about $1.63 per 1M tokens (blended) and is proprietary; Kimi K2.6 is about $1.49 and open-weight.
The model picks the moves; the agent runs the loop, the tools, and the guardrails. Once you've chosen a model, see which agent gets the most out of it.