Claude Haiku 4.5
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance…
Full description at the source- Input price
- per 1M tokens
- Output price
- per 1M tokens
- Context
- 200K64K max output
- Cost / request
- 8K in · 500 out
01Routes and pricing
02Capabilities
- Input
- text
- Output
- text
- Context
- 200K
- Max output
- 64K
ReasoningTool callingJSON mode
03Benchmarks
Emotional intelligence
1063.9 EloEQ-Bench 4EQ-Bench 404Quick start
Call it with your RProuter key
Any OpenAI-compatible SDK works. Point it at the RProuter base URL from your API keys page and use this model ID.
Catalog source: openrouter.ai · checked 2026-09-16
const response = await client.chat.completions.create({
model: "anthropic/claude-haiku-4.5",
messages: [{ role: "user", content: "A story begins…" }],
max_tokens: 500,
stream: true,
});
for await (const chunk of response) {
process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
}