Last verified 2025-09-22 (left) · 2025-09-22 (right)
Claude Sonnet 3.7 (Legacy) vs o4-mini — Pricing & Capability Comparison
Claude Sonnet 3.7 (Legacy) charges $3.00 per million input tokens and $15.00 per million output tokens. o4-mini comes in at $1.10 / $4.40. Context windows span 200K vs 200K tokens respectively.
Input price (per 1M)
Claude Sonnet 3.7 (Legacy)
$3.00
o4-mini
$1.10
o4-mini leads here
Output price (per 1M)
Claude Sonnet 3.7 (Legacy)
$15.00
o4-mini
$4.40
o4-mini leads here
Context window
Claude Sonnet 3.7 (Legacy)
200,000 tokens
o4-mini
200,000 tokens
Claude Sonnet 3.7 (Legacy) leads here
Cached input
Claude Sonnet 3.7 (Legacy)
Not published
o4-mini
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 Sonnet 3.7 (Legacy) | o4-mini |
|---|---|---|
Balanced conversation 50% input · 50% output | $0.0900 | $0.0275 |
Input-heavy workflow 80% input · 20% output | $0.0540 | $0.0176 |
Generation heavy 30% input · 70% output | $0.114 | $0.0341 |
Cached system prompt 90% cached input · 10% fresh output | $0.0420 | $0.0143 |
Frequently asked questions
Which model is cheaper per million input tokens?
o4-mini costs $1.10 per million input tokens versus $3.00 for Claude Sonnet 3.7 (Legacy).
How do output prices compare?
o4-mini charges $4.40 per million output tokens, while Claude Sonnet 3.7 (Legacy) costs $15.00 per million.
Which model supports a larger context window?
Claude Sonnet 3.7 (Legacy) offers 200,000 tokens (200K) versus 200K for o4-mini.