How do I migrate from Claude 4 to a cheaper model?

Change your model name string from 'claude-4-opus' to your chosen replacement. Your API key, SDK, and endpoint stay the same. The cheapest premium alternative is DeepSeek V4 Pro at $0.435/$0.87 per million tokens — 97% cheaper than Claude 4 Opus.

Claude 4 Migration Tool — Compare All 34 Alternatives & Calculate Costs

1 Select your current model

Which Claude 4 model are you migrating from?

Claude 4 Opus — $15 / $75

Claude Sonnet 4 — $3 / $15

Current	Replacement	Price Change	Context
Claude 4 Opus	Claude Opus 4.8	67% cheaper	200K → 1M

2 Enter your monthly usage

We'll calculate costs across all 34 models based on your actual usage.

Input tokens (millions/month) Total input tokens per month

Output tokens (millions/month) Total output tokens per month

Maximum savings vs your current model

$0/mo

by switching to the cheapest alternative

Your Current Cost

Claude 4 Opus

Direct Replacement

Claude Opus 4.8

Cheapest Alternative

—

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 34 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 Lifetime access — $29 once

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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 miss the June 15 deadline?

API calls to 'claude-4-opus' and 'claude-sonnet-4' will return errors. Your app will break until you update the model name. Migrate before June 15 to avoid downtime.

Claude 4 Migration Tool