Introducing Claude Haiku 4.5: Near-Frontier Performance, Supercharged Speed, and Now Live on XXAI

The next generation of lightweight AI is here — and it’s fast enough to feel like it’s on caffeine. Claude Haiku 4.5, the newest small model from Anthropic, is officially available today. Despite its compact size, it delivers performance close to what was considered state-of-the-art just a few months ago. Now developers and creators can tap into premium-level intelligence at a fraction of the cost and more than twice the speed.

And there’s even better news for our community: ​Claude Haiku 4.5 is now fully available on XXAI​, giving users instant access to the latest Anthropic model with zero setup, zero friction, and maximum productivity.

A New Performance Benchmark for Small Models

Five months ago, Claude Sonnet 4 was pushing the boundaries of AI capabilities. Today, Claude Haiku 4.5 reaches similar levels of coding performance while costing three times less and running more than twice as fast.

In several domains — including computer-use tasks — Haiku 4.5 even surpasses Sonnet 4. This makes it an ideal fit for applications where real-time responsiveness matters: chat assistants, customer support agents, lightweight automation tools, and pair-programming workflows.

On XXAI, users can now experience this speed upgrade firsthand across content creation, coding, multilingual tasks, and everyday AI interactions.

Where Claude Haiku 4.5 Shines

Claude Haiku 4.5 isn’t just faster — it feels smoother, smarter, and more adaptive in daily use. Key scenarios include:

• Low-latency assistants that need to respond instantly
• Customer service agents processing rapid message flows
• Pair programming or multi-agent coding
• Rapid prototyping and iteration cycles
• AI tools requiring continuous back-and-forth reasoning

On XXAI, these use cases benefit immediately from Haiku 4.5’s acceleration, making workflows noticeably more responsive and fluid — like switching from economy WiFi to fiber-optic.

XXAI Users Can Access Haiku 4.5 Today

We’re excited to share that ​XXAI has fully integrated Claude Haiku 4.5 across our platform​. This means:

• No API changes
• No additional configuration
• No extra fees — just seamless access to the newest model
• Available across chat, coding, creative tools, and multilingual processing

If you want to try the latest Anthropic capabilities without diving into API docs or cloud dashboards, XXAI is now one of the fastest ways to get hands-on with Haiku 4.5.

Ecosystem Strategy: Smarter Together

Claude Sonnet 4.5, released recently, remains Anthropic’s frontier-level powerhouse — the top coding model available today. But Haiku 4.5 introduces a new high-efficiency option for users who want near-frontier performance with significantly better cost-efficiency.

Perhaps the coolest part? You can combine them.

For example:

• Sonnet 4.5 handles complex reasoning, planning, multi-step breakdowns
• Haiku 4.5 executes subtasks in parallel at high speed

Think of it as Sonnet being the “strategist” and Haiku being an entire squad of incredibly fast “operators.”

Availability & Pricing

Claude Haiku 4.5 is now available:

• On Claude Code and all Anthropic apps
• Through the Claude API via claude-haiku-4-5
• On Amazon Bedrock
• On Google Cloud Vertex AI
• And of course — fully live on XXAI

Pricing is Anthropic’s most economical yet: \$1 / \$5 per million input/output tokens.

This makes Haiku 4.5 a powerful drop-in replacement for Haiku 3.5 or even Sonnet 4 in many cost-sensitive applications.

Benchmark Results

Haiku 4.5 ranks as one of Anthropic’s strongest models across major benchmarks:

• Outstanding SWE-bench Verified scores
• Strong results on AIME, MMMLU, and OSWorld
• Significant improvements in reasoning, coding, and tool use
• Performance in several tasks rivaling or surpassing prior flagship models

It’s rare for a lightweight model to punch this far above its weight class — but Haiku 4.5 does exactly that.

Safety & Alignment

Claude Haiku 4.5 isn’t just powerful; it’s also Anthropic’s safest model to date by several automated alignment metrics.

Key findings include:

• Lower rates of misaligned or concerning behavior compared to Haiku 3.5
• More aligned than both Sonnet 4.5 and Opus 4.1 in automated assessments
• Limited risk across CBRN-related outputs
• Released under ​ASL-2​, indicating lower safety restrictions compared to ASL-3 models

For developers and organizations prioritizing trustworthy AI, Haiku 4.5 offers a balanced mix of capability, safety, and control.

Further Resources

Users and developers can explore more through:

• The full Claude Haiku 4.5 system card
• Model documentation
• Technical evaluation reports
• Instructions for usage on API, Bedrock, and Vertex AI

Everything is available publicly for transparency and implementation guidance.

Methodology Summary

All benchmark results follow strict evaluation processes, including:

• Multiple trial averages
• Default sampling parameters
• Defined thinking budgets (up to 128K)
• Tool-enabled workflows where relevant
• Official benchmark frameworks (SWE-bench Verified, OSWorld, τ2-bench, etc.)

This ensures performance results are reproducible, transparent, and comparable across providers.

Experience Claude Haiku 4.5 on XXAI Today

Claude Haiku 4.5 brings together intelligence, speed, and efficiency in a way that redefines what a “small model” can do. With XXAI offering immediate access, users can explore its capabilities right now — whether for coding, content, reasoning, or creative tasks.

If you want near-frontier performance without the frontier-level price tag, Haiku 4.5 is your new go-to.