Claude Haiku 4.5 vs Claude Sonnet 4

Compare Anthropic and Anthropic AI models

Anthropic

Claude Haiku 4.5

Anthropic

Claude Sonnet 4

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Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

Claude Haiku 4.5

Per Request:$0.003500

Daily:$0.35

Monthly:$10.50

Yearly:$127.75

Claude Sonnet 4

Per Request:$0.0105

Daily:$1.05

Monthly:$31.50

Yearly:$383.25

Cost Differences

+$0.007000

Per Request

+$0.70

Daily

+$21.00

Monthly

+$255.50

Yearly

Claude Sonnet 4 costs more than Claude Haiku 4.5

Feature Comparison

Feature	Claude Haiku 4.5	Claude Sonnet 4
Provider	Anthropic	Anthropic
Input Price	$1.00/1M tokens	$3.00/1M tokens
Output Price	$5.00/1M tokens	$15.00/1M tokens
Context Window	200,000 tokens	200,000 tokens
Max Output	64,000 tokens	64,000 tokens
Category	efficient	standard
Capabilities	textvision	textvisioncodereasoning
Release Date	10/15/2025	5/14/2025

Claude Haiku 4.5 vs Claude Sonnet 4: Which Should You Choose?

Choosing between Claude Haiku 4.5 and Claude Sonnet 4 depends on your priorities: cost efficiency, context length, or raw capability. Claude Haiku 4.5 is the more affordable option at $1.00/1M input tokens — 67% cheaper than Claude Sonnet 4.

These models target different tiers: Claude Haiku 4.5 is a efficient model while Claude Sonnet 4 is standard. This means they're optimized for different workloads. Claude Sonnet 4 targets more demanding workloads, while Claude Haiku 4.5 provides a cost-effective option for everyday tasks.

Output costs matter too. Claude Haiku 4.5 charges $5.00/1M output tokens vs $15.00 for Claude Sonnet 4. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Claude Haiku 4.5 has the edge here at $5.00/1M output tokens.

Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.

Best Use Cases

Choose Claude Haiku 4.5 when:

• Budget is a primary concern
• You're already using Anthropic's API ecosystem
• You're running high-volume, latency-sensitive workloads

Choose Claude Sonnet 4 when:

• You need more capabilities (code, reasoning)
• You're already using Anthropic's API ecosystem

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

Claude Haiku 4.5 (Anthropic)

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Claude Sonnet 4 (Anthropic)

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Frequently Asked Questions

Which is cheaper, Claude Haiku 4.5 or Claude Sonnet 4?▼

Claude Haiku 4.5 is cheaper for input tokens at $1.00 per million tokens vs $3.00 for Claude Sonnet 4 — that's 67% savings on input costs.

What is the context window difference between Claude Haiku 4.5 and Claude Sonnet 4?▼

Claude Haiku 4.5 supports 200,000 tokens while Claude Sonnet 4 supports 200,000 tokens — a difference of 0 tokens in favor of Claude Haiku 4.5.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, Claude Haiku 4.5 is the lower-cost option, while Claude Haiku 4.5 offers a larger context window (200,000 vs 200,000 tokens). Choose Claude Haiku 4.5 for budget sensitivity or Claude Haiku 4.5 for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, Claude Haiku 4.5 costs about $10.50/month and Claude Sonnet 4 costs about $31.50/month. Overall, Claude Haiku 4.5 has lower combined input + output rates ($1.00 in, $5.00 out) vs Claude Sonnet 4.