Grok-4

Three models dominate the 2026 AI coding conversation, and none of them is universally best. Claude Opus 4 leads SWE-bench Verified, Grok 4 holds an edge on Terminal-Bench 2.0 shell tasks, and Gemini 2.5 Pro pairs a 1M-token context window with the lowest price of the three at $25/month. Picking the wrong one means paying for context you never use or choosing speed over correctness on a production codebase. This comparison cuts through the benchmark noise and maps each model to the workflows where it actually earns its subscription. ...

Grok 4 launched in Q2 2026 as xAI’s flagship reasoning model, positioned against Claude Opus 4.7 and GPT-5.5 at a competitive $3.50 per million tokens for API access — significantly cheaper than Claude Opus 4.7’s input pricing or GPT-5.5’s $5/million input tokens. The 2M+ context window is the headline spec: processing an entire large codebase or a full book in a single prompt without chunking. The grok-code-fast variant adds a specialized tokenizer optimized for programming tasks. xAI built Colossus — a 100,000+ H100/H200 GPU cluster — specifically for Grok 4’s training, which reflects both the ambition and the resources behind this model. Here’s an honest technical assessment of what Grok 4 delivers versus its benchmarks. ...