Released 16 days after Claude Sonnet 4.5 · All Anthropic releases
Claude Haiku 4.5 delivers coding performance similar to Claude Sonnet 4 while running more than twice as fast at roughly a third of the cost. It scores 73.3% on SWE-bench Verified, ranking among the strongest coding models for its class, and surpasses Sonnet 4 on certain tasks such as computer use. As the first Haiku model to support extended thinking, Haiku 4.5 brings controllable reasoning depth to the family, performing notably better on complex coding and multi-step reasoning when extended thinking is enabled. It supports a 200K token context window and shows a statistically significantly lower overall rate of misaligned behaviors than larger Claude models. Haiku 4.5 is well suited to chat assistants, customer service agents, and pair programming, offering near-frontier performance at strong cost efficiency.
Claude Haiku 4.5 runs on 7 different routes through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.
| Provider | Region | Zero data retention | Training | Input | Output |
|---|---|---|---|---|---|
| US | Not by default | No | $1.00 | $5.00 | |
| EU | Zero data retention | No | $1.10 | $5.50 | |
| EU | Not by default | No | $1.00 | $5.00 | |
| US | Not by default | No | $1.00 | $5.00 | |
| EU | Not by default | No | $1.10 | $5.50 | |
| Multi | Not by default | No | $1.00 | $5.00 | |
| EU | Not by default | No | $1.10 | $5.50 |
Claude Haiku 4.5 runs on 4 independently monitored routes through the Opper gateway. A direct integration leaves you on one of them, the gateway serves whichever is healthy.
Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider Opper monitors.
Each route hosting Claude Haiku 4.5 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention is not on by default — abuse monitoring. No training on customer data. US; SCCs; DPA available.
Zero data retention is on by default on Pay-as-you-go — no action required. No training on customer data. EU; DPA available.
Zero data retention is not on by default — abuse monitoring, 30-day retention. No training on customer data. EU; DPA available.
Zero data retention is not on by default — abuse monitoring. No training on customer data. US; SCCs; DPA available.
Zero data retention is not on by default — abuse monitoring. No training on customer data. EU; DPA available.
Zero data retention is not on by default — abuse monitoring. No training on customer data. GLOBAL; SCCs; DPA available.
Zero data retention is not on by default — abuse monitoring. No training on customer data. EU; DPA available.
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Call Claude Haiku 4.5 through the Opper gateway with one API key. Let your coding agent set it up, or call it directly — Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.
Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.OPPER_API_KEY,baseURL: "https://api.opper.ai/v3/compat",});const completion = await client.chat.completions.create({model: "anthropic/claude-haiku-4-5",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
Side-by-side on privacy, EU hosting, pricing, and benchmarks.
