Claude Haiku 4.5 vs o4 Mini
Complete pricing and performance comparison between Anthropic's Claude Haiku 4.5 and OpenAI's o4 Mini.
Quick Verdict
Cheaper
Claude Haiku 4.5 (input) / o4 Mini (output)
Input: 1.1x diff, Output: 1.1x diff
Larger Context
Claude Haiku 4.5
200K vs 200K
Higher Quality
o4 Mini
Score: 33 vs 31
Faster
o4 Mini
140 vs 125 tok/s
Pricing Comparison
| Spec | Claude Haiku 4.5 | o4 Mini | Difference |
|---|---|---|---|
| Provider | Anthropic | OpenAI | |
| Input / 1M tokens | $1 | $1.1 | Claude Haiku 4.5 is 9% more expensive |
| Output / 1M tokens | $5 | $4.4 | o4 Mini is 12% more expensive |
| Context Window | 200K | 200K | Same |
| Max Output | 8K | 100K | |
| Tokenizer | cl100k_base | o200k_base |
Performance Benchmarks
| Metric | Claude Haiku 4.5 | o4 Mini | Winner |
|---|---|---|---|
| Quality Index | 31 | 33 | o4 Mini |
| Output Speed | 125 tok/s | 140 tok/s | o4 Mini |
| Time to First Token | 0.41s | 32.98s | Claude Haiku 4.5 |
| Value (Quality/$) | 31.1 | 30.1 | 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 | o4 Mini | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0025 | $0.0024 | Same |
10 requests 10K in / 3K out | $0.025 | $0.024 | Same |
100 requests 100K in / 30K out | $0.250 | $0.242 | o4 Mini saves $0.0080 |
1,000 requests 1M in / 300K out | $2.50 | $2.42 | o4 Mini saves $0.080 |
10,000 requests 10M in / 3M out | $25.00 | $24.20 | o4 Mini saves $0.800 |
1M requests/mo 1B in / 300M out | $2500.00 | $2420.00 | o4 Mini saves $80.00 |
Pros & Cons
Claude Haiku 4.5 Strengths
- +Cheaper input tokens
- +Lower latency (faster first token)
o4 Mini Strengths
- +Cheaper output tokens
- +Higher max output tokens
- +Faster output (140 vs 125 tok/s)
- +Higher quality score (33 vs 31)
When to Use Each Model
Choose Claude Haiku 4.5 for
- →Projects already integrated with Anthropic's ecosystem
Choose o4 Mini for
- →Generating long-form content or detailed code
- →Tasks requiring maximum accuracy and reasoning
- →Real-time applications, chat, or autocomplete
Frequently Asked Questions
Which is cheaper, Claude Haiku 4.5 or o4 Mini?
For input tokens, Claude Haiku 4.5 is 1.1x cheaper at $1/1M tokens. For output tokens, o4 Mini is 1.1x cheaper at $4.4/1M tokens. At typical usage (1M input + 300K output), Claude Haiku 4.5 costs $2.50 vs o4 Mini at $2.42.
What's the context window difference?
Claude Haiku 4.5 supports 200K context (200,000 tokens), while o4 Mini supports 200K (200,000 tokens). o4 Mini can handle 1x more context in a single request.
Which model has better benchmarks?
Quality Index: Claude Haiku 4.5 scores 31 vs o4 Mini at 33. Speed: Claude Haiku 4.5 generates 125 tok/s vs o4 Mini at 140 tok/s. Time to first token: Claude Haiku 4.5 at 0.41s vs o4 Mini at 32.98s.
When should I choose Claude Haiku 4.5 over o4 Mini?
Choose Claude Haiku 4.5 when you need: Cheaper input tokens, Lower latency (faster first token). Choose o4 Mini when you need: Cheaper output tokens, Higher max output tokens, Faster output (140 vs 125 tok/s), Higher quality score (33 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, o4 Mini = $24.20. At 10K input + 1K output per request (longer conversations): Claude Haiku 4.5 = $150.00, o4 Mini = $154.00.