Claude Haiku 4.5
Anthropic's fast, low-cost model for high-volume, latency-sensitive work.
Claude Haiku 4.5 specifications
| Provider | Anthropic |
|---|---|
| Context window | 200,000 tokens (200K) |
| Input price | $1.00 / 1M tokens |
| Output price | $5.00 / 1M tokens |
| Inputs | Text, Images |
| Reasoning mode | Yes |
| Vision (image input) | Yes |
| Tool / function calling | Yes |
| Native real-time web | No |
| Open-weight | No |
Pricing & context web-verified June 2026 — confirm on Anthropic's pricing page.
What Claude Haiku 4.5 is best for
- High-volume, cost-sensitive workloads
- Real-time / low-latency apps
- Classification, routing, and extraction
How to prompt Claude Haiku 4.5
- Best instruction-following in its price tier — give it crisp, structured prompts.
- Use it as the cheap tier in a model-routing setup, escalating hard tasks to Sonnet/Opus.
- Keep tasks well-scoped; it rewards clarity over cleverness.
Work with Claude Haiku 4.5
- Build an optimized prompt with the Anthropic prompt generator.
- Estimate cost with the token counter & cost calculator, or compare every model on the AI model comparison page.
- Related reading: Best Claude Prompts 2026.
- Official: claude.ai
Frequently asked questions
What is Claude Haiku 4.5's context window?
Claude Haiku 4.5 has a 200,000-token context window (about 200K tokens) — the maximum amount of text it can consider at once.
How much does Claude Haiku 4.5 cost?
Via the Anthropic API, Claude Haiku 4.5 costs $1.00 per 1M input tokens and $5.00 per 1M output tokens (web-verified June 2026). Output tokens cost more, so the length of the model's reply usually drives the bill.
Is Claude Haiku 4.5 multimodal?
Yes — Claude Haiku 4.5 accepts Text, Images as input, not just text.
Is Claude Haiku 4.5 open-weight?
No — Claude Haiku 4.5 is available only through the Anthropic API, not as downloadable weights.