Claude 4 Migration Tool

Claude 4 Opus and Sonnet 4 are retired. Compare all 67 alternatives, calculate your exact savings, and get the one-line code change you need.

⚠️ Claude 4 shut down June 15, 2026 — migrate now

June 15 deadline: After this date, API calls to claude-4-opus and claude-sonnet-4 return errors. Your API key still works — just update the model name string.

1 Select your current model

Which Claude 4 model are you migrating from?

Claude 4 Opus — $15 / $75
Claude Sonnet 4 — $3 / $15
CurrentReplacementPrice ChangeContext
Claude 4 Opus Claude Opus 4.8 67% cheaper 200K → 1M

2 Enter your monthly usage

We'll calculate costs across all 82 models based on your actual usage.

Total input tokens per month
Total output tokens per month

Maximum savings vs your current model

$0/mo
by switching to the cheapest alternative
Your Current Cost
$0
Claude 4 Opus
Direct Replacement
$0
Claude Opus 4.8
Cheapest Alternative
$0

3 Your migration code

One line change. Your API key, SDK, and endpoint stay the same.

Before (deprecated)
const response = await anthropic.messages.create({
  model: "claude-4-opus",
  max_tokens: 1024,
  messages: [{ role: "user", content: "..." }]
});
After (replacement)
const response = await anthropic.messages.create({
  model: "claude-opus-4-8",
  max_tokens: 1024,
  messages: [{ role: "user", content: "..." }]
});

4 All 67 alternatives ranked by cost

Based on your usage. Sorted by monthly cost — cheapest first.

Cost Comparison

# Model Provider Input/1M Output/1M Your Monthly Cost Savings vs Current

Save Your Migration Plan

Export your cost comparison as a PDF report to share with your team. Save multiple scenarios to compare providers over time.

Export PDF migration report Save & compare scenarios Cost change alerts 100% free — all tools included
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Frequently Asked Questions

What is the best alternative to Claude 4 Opus?
Claude Opus 4.8 is the direct replacement — 67% cheaper ($5/$25 vs $15/$75) with 5x the context window. For cross-provider alternatives, GPT-5 ($1.25/$10) and DeepSeek V4 Pro ($0.435/$0.87) offer significant cost savings with strong performance.
How do I migrate from Claude 4?
Change your model name string from 'claude-4-opus' to your chosen replacement (e.g., 'claude-opus-4-8'). Your API key, SDK, and endpoint stay the same. Most teams complete the migration in under an hour.
How much cheaper are Claude 4 alternatives?
Savings range from 67% (Claude Opus 4.8) to 97% (DeepSeek V4 Pro). For a typical workload of 10M input + 2M output tokens/month, Claude 4 Opus costs $300/month. The same workload on DeepSeek V4 Pro costs $6.09/month.
Is Claude Sonnet 4.6 better than Claude Sonnet 4?
Yes — it's a strict upgrade. Same price ($3/$15 per million tokens), 5x the context window (1M vs 200K), and improved reasoning. No cost increase.
What if I missed the June 15 deadline?
API calls to 'claude-4-opus' and 'claude-sonnet-4' now return HTTP 410 Gone errors. Your app is broken until you update the model name. Migrate now to restore service.

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🔴 Claude 4 Has Been Shut Down — Read the Latest:

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This was a snapshot. What about next month?
Prices change. New models launch. Our tools catch what a one-time calculation can't — and saves you money every month.
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