How much does it cost to migrate from Claude 4 to Opus 4.8?

It costs $0 to migrate — you just need to change the model ID in your code. Claude Opus 4.8 is 67% cheaper than Claude 4 Opus ($5/$25 vs $15/$75 per 1M tokens). Most teams save $50-500/month immediately.

What code changes are needed to migrate from Claude 4 to Opus 4.8?

You only need to change the model ID from 'claude-opus-4-20250514' (or similar) to 'claude-opus-4-8-20260101'. The API is identical — same endpoint, same parameters, same response format. No other code changes required.

Is Claude Opus 4.8 as good as Claude 4 Opus?

Yes — Claude Opus 4.8 matches or exceeds Claude 4 Opus on all benchmarks. It also has a 1M context window (vs 200K for Claude 4 Opus) and is 67% cheaper. It's a strict upgrade in every dimension.

Can I use Claude Opus 4.8 as a drop-in replacement for Claude 4?

Yes. Claude Opus 4.8 is fully backward-compatible with the Claude 4 API. Change the model ID and everything else stays the same. The response format, streaming behavior, and tool use are all identical.