Migration assistant

Replacing Claude Haiku 3.5?

Ranked replacement candidates, each shown with exactly what changes if you switch. Same-provider matches surface first because switching cost is lower; capability regressions are flagged in red.

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Migrating from

Claude Haiku 3.5

Anthropic · Claude Haiku 3 · Active
Input: $0.8/M Output: $4/M Context: 200K
View detail →
#1 RECOMMENDED

Claude Opus 4

Anthropic · Claude Opus 4
same provider; 1775% more expensive input; same context window
View full detail →
What changes if you switch
Field Claude Haiku 3.5 → Claude Opus 4 Impact
Input price $0.8/M → $15/M +1775% more expensive
Output price $4/M → $75/M +1775% more expensive
Context window 200K tokens → 200K tokens Same capacity
Function calling ✓ supported → ✓ supported Preserved
Prompt caching ✓ supported → ✓ supported Preserved
Lifecycle Active → Active Same status
Other candidates
#2

Claude Sonnet 4

Anthropic
same provider; 275% more expensive input; same context window
Details →
Input price: +275% more expensiveOutput price: +275% more expensive
#3

Gemini 2.5 Flash

Google Gemini
62% cheaper input; 1M context (larger)
Details →
Input price: Save 62%Output price: Save 38%Context window: +424% larger
#4

Gemini 2.5 Flash-Lite

Google Gemini
88% cheaper input; 1M context (larger)
Details →
Input price: Save 88%Output price: Save 90%Context window: +424% larger
#5

Gemini 3.1 Flash-Lite

Google Gemini
69% cheaper input; 1M context (larger)
Details →
Input price: Save 69%Output price: Save 62%Context window: +400% larger
Methodology

How candidates are ranked

Candidates are ranked by how much of the source model's profile each one preserves — weighing switching cost (same provider or model family surface first), capability parity (what you keep versus what you'd lose), context window, and pricing direction. A candidate that is itself deprecated is pushed down the list; one that's already retired is never recommended.

Ranking is purely algorithmic — no editorial weighting, no paid placement. Every value is pulled from each provider's own documentation; click any model name to see the source-linked detail.