Last verified 2025-09-22 (left) · 2025-09-22 (right)
Claude Haiku 3.5 vs Claude Sonnet 3.7 (Legacy) — Pricing & Capability Comparison
Claude Haiku 3.5 charges $0.80 per million input tokens and $4.00 per million output tokens. Claude Sonnet 3.7 (Legacy) comes in at $3.00 / $15.00. Context windows span 200K vs 200K tokens respectively.
TL;DR — Quick Comparison
- ✓Claude Haiku 3.5 is cheaper overall: $4.80 per 1M tokens (in+out) vs $18.00 for Claude Sonnet 3.7 (Legacy) — saves $13.20 per 1M tokens
- ✓Input pricing: Claude Haiku 3.5 $0.80/1M vs Claude Sonnet 3.7 (Legacy) $3.00/1M
- ✓Output pricing: Claude Haiku 3.5 $4.00/1M vs Claude Sonnet 3.7 (Legacy) $15.00/1M
- ✓Context window: Claude Haiku 3.5 offers more (200K vs 200K)
- ✓Use our calculator below to estimate costs for your specific usage pattern
Input price (per 1M)
Claude Haiku 3.5
$0.80
Claude Sonnet 3.7 (Legacy)
$3.00
Claude Haiku 3.5 leads here
Output price (per 1M)
Claude Haiku 3.5
$4.00
Claude Sonnet 3.7 (Legacy)
$15.00
Claude Haiku 3.5 leads here
Context window
Claude Haiku 3.5
200,000 tokens
Claude Sonnet 3.7 (Legacy)
200,000 tokens
Claude Haiku 3.5 leads here
Cached input
Claude Haiku 3.5
Not published
Claude Sonnet 3.7 (Legacy)
Not published
No published data
Cost comparison for 10K-token workloads
Side-by-side pricing for identical workloads (10,000 total tokens per request) across different distributions.
| Scenario | Claude Haiku 3.5 | Claude Sonnet 3.7 (Legacy) |
|---|---|---|
Balanced conversation 50% input · 50% output | $0.0240 | $0.0900 |
Input-heavy workflow 80% input · 20% output | $0.0144 | $0.0540 |
Generation heavy 30% input · 70% output | $0.0304 | $0.114 |
Cached system prompt 90% cached input · 10% fresh output | $0.0112 | $0.0420 |
Frequently asked questions
Which is cheaper: Claude Haiku 3.5 or Claude Sonnet 3.7 (Legacy)?
Claude Haiku 3.5 is cheaper for input tokens at $0.80 per 1M tokens compared to $3.00. For output, Claude Haiku 3.5 costs $4.00 per 1M tokens versus $15.00 for Claude Sonnet 3.7 (Legacy).
What is the cost per 1M tokens for Claude Haiku 3.5?
Claude Haiku 3.5 pricing: $0.80 per 1M input tokens and $4.00 per 1M output tokens. Context window: 200,000 tokens.
What is the cost per 1M tokens for Claude Sonnet 3.7 (Legacy)?
Claude Sonnet 3.7 (Legacy) pricing: $3.00 per 1M input tokens and $15.00 per 1M output tokens. Context window: 200,000 tokens.
How much does it cost per 1K tokens?
Per 1K tokens: Claude Haiku 3.5 costs $0.0008 input / $0.0040 output. Claude Sonnet 3.7 (Legacy) costs $0.0030 input / $0.0150 output. This is useful for calculating small-scale usage costs.
Which model supports a larger context window?
Claude Haiku 3.5 offers 200,000 tokens (200K) versus 200K for Claude Sonnet 3.7 (Legacy).
What is the estimated monthly cost for typical usage?
For a typical workload of 10M input + 2M output tokens per month: Claude Haiku 3.5 would cost approximately $16.00, while Claude Sonnet 3.7 (Legacy) would cost $60.00. Claude Haiku 3.5 is more economical for this usage pattern.
Do these models support prompt caching?
Claude Haiku 3.5 does not publish cached pricing. Claude Sonnet 3.7 (Legacy) does not publish cached pricing.
Which model is best for my use case?
Choose Claude Haiku 3.5 for cost-sensitive applications with high input volume. Choose Claude Haiku 3.5 if you need 200K context for long documents or conversations. Consider prompt caching if you have repeated context. Use our token calculator to model your specific usage pattern.