Claude Opus 4.8 Review: Better At What’s It Good At, Worse At What It’s Not

In brief

• Opus 4.8 posted a clear win in math and produced the cleanest one-prompt game we’ve ever tested.
• A single coding prompt drained our entire Pro token quota, making the model impractical for large projects without a Max plan or heavy API spend.
• Creative writing barely moved versus 4.7.