Claude Haiku 4.5 vs GPT-5 Mini
Complete pricing and performance comparison between Anthropic's Claude Haiku 4.5 and OpenAI's GPT-5 Mini.
Quick Verdict
Cheaper
GPT-5 Mini
4.0x cheaper input, 2.5x cheaper output
Larger Context
GPT-5 Mini
400K vs 200K
Higher Quality
GPT-5 Mini
Score: 41 vs 31
Faster
Claude Haiku 4.5
125 vs 82 tok/s
Pricing Comparison
| Spec | Claude Haiku 4.5 | GPT-5 Mini | Difference |
|---|---|---|---|
| Provider | Anthropic | OpenAI | |
| Input / 1M tokens | $1 | $0.25 | GPT-5 Mini is 75% more expensive |
| Output / 1M tokens | $5 | $2 | GPT-5 Mini is 60% more expensive |
| Context Window | 200K | 400K | 2x difference |
| Max Output | 8K | 16K | |
| Tokenizer | cl100k_base | o200k_base |
Performance Benchmarks
| Metric | Claude Haiku 4.5 | GPT-5 Mini | Winner |
|---|---|---|---|
| Quality Index | 31 | 41 | GPT-5 Mini |
| Output Speed | 125 tok/s | 82 tok/s | Claude Haiku 4.5 |
| Time to First Token | 0.41s | 99.18s | Claude Haiku 4.5 |
| Value (Quality/$) | 31.1 | 164.8 | Higher = better value |
Benchmark data from Artificial Analysis. Quality Index is a composite score across reasoning, coding, and knowledge tasks.
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | Claude Haiku 4.5 | GPT-5 Mini | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0025 | $0.0008 | GPT-5 Mini saves $0.0016 |
10 requests 10K in / 3K out | $0.025 | $0.0085 | GPT-5 Mini saves $0.017 |
100 requests 100K in / 30K out | $0.250 | $0.085 | GPT-5 Mini saves $0.165 |
1,000 requests 1M in / 300K out | $2.50 | $0.850 | GPT-5 Mini saves $1.65 |
10,000 requests 10M in / 3M out | $25.00 | $8.50 | GPT-5 Mini saves $16.50 |
1M requests/mo 1B in / 300M out | $2500.00 | $850.00 | GPT-5 Mini saves $1650.00 |
Pros & Cons
Claude Haiku 4.5 Strengths
- +Faster output (125 vs 82 tok/s)
- +Lower latency (faster first token)
GPT-5 Mini Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (400K vs 200K)
- +Higher max output tokens
- +Higher quality score (41 vs 31)
When to Use Each Model
Choose Claude Haiku 4.5 for
- →Real-time applications, chat, or autocomplete
Choose GPT-5 Mini for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
- →Tasks requiring maximum accuracy and reasoning
Frequently Asked Questions
Which is cheaper, Claude Haiku 4.5 or GPT-5 Mini?
For input tokens, GPT-5 Mini is 4.0x cheaper at $0.25/1M tokens. For output tokens, GPT-5 Mini is 2.5x cheaper at $2/1M tokens. At typical usage (1M input + 300K output), Claude Haiku 4.5 costs $2.50 vs GPT-5 Mini at $0.850.
What's the context window difference?
Claude Haiku 4.5 supports 200K context (200,000 tokens), while GPT-5 Mini supports 400K (400,000 tokens). GPT-5 Mini can handle 2x more context in a single request.
Which model has better benchmarks?
Quality Index: Claude Haiku 4.5 scores 31 vs GPT-5 Mini at 41. Speed: Claude Haiku 4.5 generates 125 tok/s vs GPT-5 Mini at 82 tok/s. Time to first token: Claude Haiku 4.5 at 0.41s vs GPT-5 Mini at 99.18s.
When should I choose Claude Haiku 4.5 over GPT-5 Mini?
Choose Claude Haiku 4.5 when you need: Faster output (125 vs 82 tok/s), Lower latency (faster first token). Choose GPT-5 Mini when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (400K vs 200K), Higher max output tokens, Higher quality score (41 vs 31).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): Claude Haiku 4.5 = $25.00, GPT-5 Mini = $8.50. At 10K input + 1K output per request (longer conversations): Claude Haiku 4.5 = $150.00, GPT-5 Mini = $45.00.