Compare GPT 5.6 Sol Pro from OpenAI and Grok 4.5 from Grok on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
GPT 5.6 Sol Pro
Grok 4.5gpt-5.6-sol-pro is OpenAI's multimodal model, designed for complex reasoning and generation tasks. It supports text and image inputs alongside an extensive 1,050,000-token context window. Compared with GPT-5.6 Sol, it is served with reasoning.mode set to pro for higher-quality responses on complex tasks.
Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
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Grok 4.5: $6/M output tokens; GPT 5.6 Sol Pro: $40/M. Use the cost calculator above to estimate your own workload.
GPT 5.6 Sol Pro accepts 1,050,000 and Grok 4.5 accepts 500,000 input tokens.
GPT 5.6 Sol Pro accepts text and image input; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.
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