GPT-5.5 Pro vs Llama 4 Scout

Compare GPT-5.5 Pro and Llama 4 Scout side by side. See pricing, capabilities, context length, and performance. Use both on Krater.ai from $20/mo.

GPT-5.5 Pro vs Llama 4 Scout: strengths, best use cases and how to run both side by side. The live page adds context windows, token pricing and more comparisons once it loads.

Try both on Krater

Run GPT-5.5 Pro and Llama 4 Scout on the same prompt in the Krater Model Arena, then keep the winner in your workflow. One subscription covers both, from $20 a month.

Open Krater chat · GPT-5.5 Pro on Krater · Llama 4 Scout on Krater

What each model is best at

GPT-5.5 Pro

OpenAI's GPT-5.5 Pro is the premium tier of GPT-5.5, with extended chain-of-thought reasoning for the hardest engineering, math, and research problems. 1M-token context, frontier accuracy.

Strengths

  • Extended thinking for hard problems
  • Top-tier code generation and refactoring
  • Frontier performance on math and science benchmarks
  • Long-context reasoning over entire codebases

Best for

  • Hard engineering and architectural questions
  • Research and scientific reasoning
  • Multi-step agentic tool use
  • Tasks where accuracy matters more than speed

Llama 4 Scout

The efficient member of Meta's Llama 4 family, Scout offers impressive capability with a massive 10M token context window at lower cost than Maverick.

Strengths

  • Massive 10M token context window
  • Cost-effective Llama 4 performance
  • Good coding and reasoning
  • Fast for its capability level

Best for

  • Extremely long document analysis
  • Large codebase understanding
  • Cost-conscious Llama 4 usage
  • Applications needing massive context

How we compare models

Our tested head-to-heads run the same prompt set through both models in the Model Arena, then rank answers blind. Read the testing methodology, or browse every comparison.