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 · Active
Input: $0.8/M Output: $4/M Context: —
View detail →
#1 RECOMMENDED

Claude Sonnet 5

Anthropic
same provider; 96% cheaper input
View full detail →
What changes if you switch
Field Claude Haiku 3.5 → Claude Sonnet 5 Impact
Input price $0.8/M → $0.03/M Save 96%
Output price $4/M → $0.03/M Save 99%
Context window — → 200K tokens One value not verified
Prompt caching ✓ supported → ✓ supported Preserved
Lifecycle Active → Active Same status
Other candidates
#2

Claude Haiku 4.5

Anthropic
same provider; 25% more expensive input
Details →
Input price: +25% more expensiveOutput price: +25% more expensive
#3

Claude Fable 5

Anthropic
same provider; 1150% more expensive input
Details →
Input price: +1150% more expensiveOutput price: +1150% more expensive
#4

Claude Mythos 5

Anthropic
same provider; 1150% more expensive input
Details →
Input price: +1150% more expensiveOutput price: +1150% more expensive
#5

Claude Opus 4

Anthropic
same provider; 1775% more expensive input
Details →
Input price: +1775% more expensiveOutput price: +1775% more expensive
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.