SpaceXAI's Grok 4.6 matches OpenAI's best model and undercuts it on price

SpaceXAI's Grok 4.6 scores 61 on the Artificial Analysis Intelligence Index, tying OpenAI's GPT-5.6 Sol and trailing only Anthropic's Claude Opus 5 (63) and Claude Fable 5 (62), while costing $2/$6 per million tokens—more than 60 percent cheaper than Claude Opus 5 ($5/$25) and GPT-5.6 Sol ($5/$30). The model, available via API, Cursor, Grok Build, and partners like OpenRouter, Vercel, and Cloudflare, excels on agentic tasks, ranking second on GDPval-AA v2 with an Elo of 1,753 and completing tasks in about 53 steps versus Claude Opus 5's 103.

SpaceXAI's Grok 4.6 matches OpenAI's best model and undercuts it on price Grok 4.6 catches up to frontier models while costing far less. According to the Artificial Analysis Intelligence Index https://artificialanalysis.ai/articles/grok-4-6-benchmarks-and-analysis , SpaceXAI's new model scores 61 points, tying OpenAI's GPT-5.6 Sol. Only Anthropic's Claude Opus 5 63 and Claude Fable 5 62 score higher. That's a five-point jump over its predecessor, Grok 4.5. Grok 4.6 performs especially well on agentic tasks, where models independently carry out multi-step workflows. On the GDPval-AA v2 benchmark https://the-decoder.com/openai-says-top-ai-models-are-reaching-expert-territory-on-real-world-knowledge-work/ , which aims to measure real-world knowledge work on a computer, it ranks second with an Elo score of 1,753, trailing only Claude Opus 5. It completes complex tasks in about 53 steps. Claude Opus 5 needs roughly 103. Pricing stays at $2/$6 per million tokens. That's more than 60 percent cheaper than Claude Opus 5 $5/$25 and GPT-5.6 Sol $5/$30 . Grok 4.6 is available now through the API https://console.x.ai/ , Cursor https://cursor.com/ , Grok Build https://x.ai/build , and partners like OpenRouter, Vercel, and Cloudflare. For the first week, x.ai is offering double the usage quota in Grok Build and Cursor. AI News Without the Hype – Curated by Humans Subscribe to THE DECODER for ad-free reading, a weekly AI newsletter, our exclusive "AI Radar" frontier report six times a year, full archive access, and access to our comment section. Subscribe now