Replacing Claude Haiku 3.5 (<a class="inline-link" href="/docs/en/about-claude/model-deprecations">retired, except on Bedrock and Google Cloud</a>)?
Already retired — replacement required. 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.
Claude Haiku 3.5 (<a class="inline-link" href="/docs/en/about-claude/model-deprecations">retired, except on Bedrock and Google Cloud</a>)
| Field | Claude Haiku 3.5 (<a class="inline-link" href="/docs/en/about-claude/model-deprecations">retired, except on Bedrock and Google Cloud</a>) | → | Claude Haiku 3.5 | Impact |
|---|---|---|---|---|
| Input price | $0.8/M | → | $0.8/M | Same price |
| Output price | $1.6/M | → | $4/M | +150% more expensive |
| Prompt caching | ✓ supported | → | ✓ supported | Preserved |
| Lifecycle | Retired | → | Active | Generally available |
Claude Mythos 5 (limited availability)
AnthropicHow 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.