CURRENT SAME-PROVIDER CANDIDATE
Claude Haiku 4.5
Lowest priced current option clearing the historical ECI screen.
Claude 3.5 Haiku is retired.
What replaces Claude 3.5 Haiku?
For a direct Anthropic API replacement for Claude 3.5 Haiku, compare Claude Haiku 4.5 first. As of 2026-11-02, its verified Standard blended price is $2.00 per 1M tokens at a 75% input / 25% output mix. Among current same-provider models, it is the lowest-priced option whose ECI lower bound clears the retired model's lower bound. ECI is an estimated general-capability measure; this is not a task-performance guarantee.
Historical ECI 127.0 · Current direct API price unavailable
REPLACEMENT DECISION
Replace Claude 3.5 Haiku today.
Direct API prices at 75% input / 25% output. ECI is estimated general capability, not task success.
The provider's announced successor has no verified current tariff for its exact ID; the current choice is screened against historical ECI without a context-equivalence claim. ECI intervals can overlap; no choice guarantees task results or API compatibility.
Replacement questions
Which replacement did Anthropic announce for Claude 3.5 Haiku?
Anthropic announced claude-haiku-4-5-20251001. We have no verified current direct API price for that exact ID. Provider notice.
Is the replacement for Claude 3.5 Haiku API compatible?
API compatibility has not been verified. Check the provider's migration guidance and test your integration before switching.
Prices verified 2026-11-02; ECI snapshot 2026-11-01. Retirement applies to the Anthropic direct API; seller routes need separate evidence. Retirement notice · ECI data · Browse current models.