Claude Sonnet 4.6 vs Grok 4.1 Fast

Grok 4.1 Fast achieves a 75/100 score at just $0.50/M output tokens compared to Claude's 66/100 at $15/M output, suggesting xAI has optimized heavily for coding-specific tasks rather than general performance. The 9-point score gap combined with 15x lower input costs ($0.20/M vs $3/M) indicates Grok may be using more specialized architectures or training data focused exclusively on code generation efficiency.

Monthly costs would drop from $1,260 (20M input at $3/M + 80M output at $15/M) to just $44 (20M at $0.20/M + 80M at $0.50/M) - a 96.5% reduction or $1,216 saved per month. With Grok's 2x larger context window (2.0M vs 1.0M tokens), you could also batch more complex coding tasks without chunking, potentially reducing total token usage further.

Claude's 4.3x larger max output (128K vs 30K tokens) makes it essential for generating complete codebases, extensive documentation, or multi-file projects where Grok would hit output limits despite its 75/100 performance. Grok excels at focused tasks like single-file implementations or code reviews where its 30K limit suffices and the 30x output cost savings compound quickly.

Anthropic's established ecosystem and Claude's proven track record may justify the 9-point performance gap (66 vs 75) and 30x higher output costs for risk-averse enterprises. The $15/M output pricing also signals premium positioning - teams already integrated with Anthropic's safety features and fine-tuning workflows face switching costs that dwarf the $14.50/M output price difference.