Last verified 2026-02-11 (left) · 2025-09-22 (right)
Claude Haiku 4.5 vs GPT-5 mini — Pricing & Capability Comparison
Claude Haiku 4.5 charges $1.00 per million input tokens and $5.00 per million output tokens. GPT-5 mini comes in at $0.25 / $2.00. Context windows span 200K vs 200K tokens respectively.
TL;DR — Quick Comparison
- ✓GPT-5 mini is cheaper overall: $2.25 per 1M tokens (in+out) vs $6.00 for Claude Haiku 4.5 — saves $3.75 per 1M tokens
- ✓Input pricing: Claude Haiku 4.5 $1.00/1M vs GPT-5 mini $0.25/1M
- ✓Output pricing: Claude Haiku 4.5 $5.00/1M vs GPT-5 mini $2.00/1M
- ✓Context window: Claude Haiku 4.5 offers more (200K vs 200K)
- ✓Use our calculator below to estimate costs for your specific usage pattern
Input price (per 1M)
Claude Haiku 4.5
$1.00
GPT-5 mini
$0.25
GPT-5 mini leads here
Output price (per 1M)
Claude Haiku 4.5
$5.00
GPT-5 mini
$2.00
GPT-5 mini leads here
Context window
Claude Haiku 4.5
200,000 tokens
GPT-5 mini
200,000 tokens
Claude Haiku 4.5 leads here
Cached input
Claude Haiku 4.5
$0.100
GPT-5 mini
Not published
Claude Haiku 4.5 leads here
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 4.5 | GPT-5 mini | Claude Haiku 4.5 cached |
|---|---|---|---|
Balanced conversation 50% input · 50% output | $0.0300 | $0.0112 | $0.0255 |
Input-heavy workflow 80% input · 20% output | $0.0180 | $0.0060 | $0.0108 |
Generation heavy 30% input · 70% output | $0.0380 | $0.0148 | $0.0353 |
Cached system prompt 90% cached input · 10% fresh output | $0.0140 | $0.0043 | $0.0059 |
Frequently asked questions
Which is cheaper: Claude Haiku 4.5 or GPT-5 mini?
GPT-5 mini is cheaper for input tokens at $0.25 per 1M tokens compared to $1.00. For output, GPT-5 mini costs $2.00 per 1M tokens versus $5.00 for Claude Haiku 4.5.
What is the cost per 1M tokens for Claude Haiku 4.5?
Claude Haiku 4.5 pricing: $1.00 per 1M input tokens and $5.00 per 1M output tokens. Context window: 200,000 tokens.
What is the cost per 1M tokens for GPT-5 mini?
GPT-5 mini pricing: $0.25 per 1M input tokens and $2.00 per 1M output tokens. Context window: 200,000 tokens.
How much does it cost per 1K tokens?
Per 1K tokens: Claude Haiku 4.5 costs $0.0010 input / $0.0050 output. GPT-5 mini costs $0.0003 input / $0.0020 output. This is useful for calculating small-scale usage costs.
Which model supports a larger context window?
Claude Haiku 4.5 offers 200,000 tokens (200K) versus 200K for GPT-5 mini.
What is the estimated monthly cost for typical usage?
For a typical workload of 10M input + 2M output tokens per month: Claude Haiku 4.5 would cost approximately $20.00, while GPT-5 mini would cost $6.50. GPT-5 mini is more economical for this usage pattern.
Do these models support prompt caching?
Claude Haiku 4.5 supports prompt caching at $0.100 per 1M cached tokens, reducing costs for repeated context by up to 90%. GPT-5 mini does not publish cached pricing.
Which model is best for my use case?
Choose GPT-5 mini for cost-sensitive applications with high input volume. Choose Claude Haiku 4.5 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.