Compare Fugu Ultra v2 from sakana and Grok 4.6 from SpaceXAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Fugu Ultra v2 and Grok 4.6 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Fugu Ultra v2, from sakana, has a 1,000,000-token context window and is priced at $5/M tokens input, $30/M tokens output on OpenRouter.
Grok 4.6, from SpaceXAI, has a 500,000-token context window and is priced at $2/M tokens input, $6/M tokens output on OpenRouter.