Calculate Your Migration Savings

Use this table to estimate your monthly savings based on your current usage. Costs assume a 3:1 input-to-output ratio (common for most applications).

At 1M tokens per month, you save $600/month or $7,200 per year just by switching from Claude 4 Opus to Opus 4.8. At 100M tokens per month, the savings jump to $6,000/month or $72,000 per year.

Sonnet Migration: Same Price, Better Model

The Claude 4 Sonnet to Sonnet 4.6 migration is even simpler — the price doesn't change. You get the same $3/$15 per 1M tokens, but with meaningful quality improvements.

Here's what you get with Sonnet 4.6 that Claude 4 Sonnet doesn't have:

• 200K context window — up from 128K in Claude 4 Sonnet, so you can process larger documents and longer conversations in a single call
• Improved code generation — 15% better on HumanEval benchmarks, meaning fewer iterations to get working code
• Better instruction following — more reliable structured output and JSON generation
• Faster response times — 20-30% lower latency for most use cases

For Sonnet users, migration is a no-brainer. You're not saving money on the API call, but you're saving developer time through better quality output and fewer retries.

Budget Alternatives Beyond Claude

If you're already paying for Claude 4 and want to explore cheaper alternatives, here are the strongest options at different price points.

For most Claude 4 Opus users, Opus 4.8 is the natural migration path — you stay within the Anthropic ecosystem with the same API format, just at 67% less cost. But if budget is the top priority, Claude Haiku 4.5 at $6/M total or DeepSeek V4 Pro at $1.31/M total offer dramatic savings.

Migration Path Recommendations by Budget

Your ideal migration path depends on your budget and quality requirements. Here are our recommendations for each scenario.

Step-by-Step Migration Checklist

Follow this checklist to migrate off Claude 4 by the June 15 deadline.

1. Audit your current usage. Check your Anthropic dashboard for the last 30 days of token usage by model. Note your input/output split.
2. Calculate savings. Use the tables above or the APIpulse calculator to model your costs on the new models.
3. Test your prompts on the new model. Opus 4.8 and Sonnet 4.6 may respond differently to the same prompts. Run a test batch before switching production.
4. Update your API version. Change the model ID in your code from claude-4-opus-20260101 to claude-opus-4.8 (or the appropriate new model ID).
5. Set up cost monitoring. Use APIpulse to track your new spending and set alerts if costs exceed expectations.
6. Monitor quality for 1 week. Check output quality, latency, and error rates after migration.
7. Verify your bill. Compare your next bill to the old one to confirm savings match projections.

The Bottom Line

Claude 4 deprecation is not a threat — it's an opportunity. Opus 4.8 delivers better performance at 67% less cost. Sonnet 4.6 improves on Claude 4 Sonnet at the same price. And if you want to go further, alternatives like Claude Haiku 4.5 ($1/$5) and DeepSeek V4 Pro ($0.44/$0.87) offer even more dramatic savings.

Here's the quick decision:

• Want to stay with Anthropic? → Opus 4.8 ($5/$25) or Sonnet 4.6 ($3/$15)
• Want maximum savings? → Claude Haiku 4.5 ($1/$5) or DeepSeek V4 Pro ($0.44/$0.87)
• Want the best of both worlds? → Hybrid routing: Haiku for simple tasks, Opus 4.8 for complex reasoning
• Want to track everything? → Use APIpulse calculator to model exact costs and set alerts

The migration is straightforward, the savings are real, and the new models are better. Start today and your June bill will thank you.