Anthropic isn’t quite ready to unveil their big, scary supermodel yet. You know, Claude Mythos. The one supposedly breaking all the rules? Hold on. Instead, they’re polishing the old champion. Enter Claude Opus 4.8.
It’s the flagship now. The upgraded version. Anthropic says it builds on 4.7 with “improvements across benchmarks” and acts as a better collaborator. A Thursday press release promised excellence. The numbers? Barely moved. Minor ticks upward across the board.
But wait. There’s a narrative here.
One specific fix claims to matter: hallucinations. Or, as Anthropic prefers to call it, honesty.
Early testers report that Opus 4. is more likely to flag uncertainties and less likely to make unsupported claims.
It won’t lie as much. It admits when it’s guessing. A “honest” machine sounds almost human, doesn’t it?
Better judgment or better marketing?
Tom Pritchard at Shopify says the judgment is noticeably sharper. He’s an engineer. He knows code. The model, he claims, asks the right questions. Catches its own mistakes. Pushes back when the plan is trash.
Consider the horror stories lately. AI agents deleting corporate databases because someone gave them loose rein. For the vibe-coders of the world, this promise of pushback is music. Or relief.
There’s also a discount for speed freaks. Fast Mode. It runs 2.5x the normal speed and costs a third of what previous models did in that setting. Anthropic is trying to please the power users who want answers before coffee hits.
Reddit users aren’t biting.
Skepticism is high. Many worry they’ll lose access to the beloved Opus 4.6. “Nobody trusts the benchmark charts,” one user summed it up. They saw the same glowing numbers for Opus 4.7, too. Remember how those looked? Pretty good then, too.
We can’t verify these stats independently. But here’s what is true.
How to actually use it
It’s live now. Claude.ai. The API. Partners like Microsoft Foundry.
The price tag? Identical to everything going back to Opus 4.5, really.
- $5 per million input tokens.
- $25 per million output tokens.
Cheap if you’re small. Expensive if you’re building an empire on it.
Should you switch now? Or wait? Anthropic has whispered about Mythos. It’s coming in weeks, apparently. If you think 4.8 can get “honest” enough about its lies… maybe you can wait for the beast that eats this model for breakfast.
