Claude 4 Is Down — Here's Your 5-Minute Fix
Claude 4 Opus and Sonnet 4 were retired on June 15, 2026. Your API calls are returning HTTP 410 Gone errors. Here's exactly how to fix it.
HTTP/1.1 410 Gone
Content-Type: application/json
{
"error": {
"type": "gone",
"message": "The model 'claude-4-opus-20250615' has been retired.
Please migrate to claude-opus-4-8 or visit
https://anthropic.com/models for alternatives."
}
}
Fix It in 3 Steps (5 Minutes)
Find your Claude 4 model IDs
Search your codebase for these strings. They're usually in one config file or API call:
claude-4-opus-20250615
claude-4-opus
claude-sonnet-4-20250514
claude-sonnet-4
claude-opus-4-8
claude-sonnet-4-6
Pick your replacement (by cost)
If you want the cheapest option, switch providers. If you want to stay with Anthropic, just update the model name:
| Model | Input / Output (per 1M tokens) | Savings vs Claude 4 Opus |
|---|---|---|
| Claude Opus 4.8 (Anthropic) | $5.00 / $25.00 | 67% cheaper |
| Claude Sonnet 4.6 (Anthropic) | $3.00 / $15.00 | 80% cheaper |
| GPT-5 (OpenAI) | $2.50 / $10.00 | 87% cheaper |
| Gemini 2.5 Pro (Google) | $1.25 / $5.00 | 93% cheaper |
| DeepSeek V4 Pro (DeepSeek) | $0.44 / $0.87 | 97% cheaper |
| DeepSeek V4 Flash (DeepSeek) CHEAPEST | $0.14 / $0.28 | 99% cheaper |
💡 Pro tip: Use our Cost Calculator to find the cheapest model for YOUR specific token usage.
Update your code and redeploy
It's just 2 lines of code. Here's the change for each provider:
- model: "claude-4-opus-20250615"
+ model: "claude-opus-4-8"
// That's it. Same API key, same SDK, same everything.
// Claude Opus 4.8 is 67% cheaper with better performance.
- model: "claude-4-opus-20250615"
+ model: "gpt-5"
// Requires OpenAI API key from platform.openai.com
// GPT-5 is 87% cheaper than Claude 4 Opus.
- model: "claude-4-opus-20250615"
+ model: "deepseek-v4-pro"
- base_url: "https://api.anthropic.com/v1"
+ base_url: "https://api.deepseek.com/v1"
// Requires DeepSeek API key from platform.deepseek.com
// 97% cheaper. Similar quality to Claude 4 Opus.
Every hour your API returns 410 errors, you're losing users and revenue. The fix takes 5 minutes. The cost of waiting? That's on you.
Why Pay When the Free Guide Is So Good?
Fair question. Here's what Pro adds that the free guide can't:
- ✓ Generic migration steps
- ✓ Cost comparison table
- ✓ Code snippets for 3 providers
- ✓ Links to alternatives
- ✓ YOUR exact costs calculated automatically
- ✓ 10 saved scenarios — compare providers side-by-side
- ✓ Export PDF reports for your team/investors
- ✓ Cost alerts when prices change
- ✓ Priority support for migration help
Join 1,200+ developers who use APIpulse weekly · 42 models · 10 providers · 82 tools · $0 subscription — ever
🧮 Calculate YOUR Exact Savings
Enter your Claude 4 usage below. See what you'd pay with each alternative.
🚀 Get Your Personalized Migration Plan
Don't guess which model is cheapest for YOUR workload. Pro analyzes your exact token usage and shows you the optimal provider — with saved scenarios, cost reports, and optimization recommendations.
- Save & compare up to 10 migration scenarios
- Export professional cost reports (HTML)
- Personalized optimization recommendations
- Cost alerts when provider prices change
- Priority email support for migration help
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