Anthropic Claude 3.5 Haiku and OpenAI o3-mini are closely matched ai language models devices with nearly identical overall scores (6.5 vs 6.6). The best choice depends on which specific features matter most to you.
Scores are relative within the ai language modelscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
Lower cost = better value. Free = open-source self-hosted.
| Metric | 3.5 Haiku | OpenAI o3-mini |
|---|---|---|
| Input (Prompt) | ✓$0.80/1M | $1.10/1M |
| Output (Completion) | ✓$4.00/1M | $4.40/1M |
| Open Source | Proprietary | Proprietary |
Context Window (tokens)
| Metric | 3.5 Haiku | OpenAI o3-mini |
|---|---|---|
| Max Output | 8,192 tok | ✓100,000 tok |
| Speed | ✓180 tok/s | 80 tok/s |
| Time to First Token | ✓350ms | 2.0s |
| Languages | 50+ | 50+ |
Higher is better. Industry-standard AI evaluation benchmarks.
3.5 Haiku
OpenAI o3-mini
3.5 Haiku
OpenAI o3-mini
3.5 Haiku
OpenAI o3-mini
3.5 Haiku
OpenAI o3-mini
3.5 Haiku
OpenAI o3-mini
| Feature | 3.5 Haiku | OpenAI o3-mini |
|---|---|---|
| Reasoning / Chain-of-Thought | ✕ | ✓ |
| Vision (Image Input) | ✓ | ✕ |
| Audio Input | ✕ | ✕ |
| Video Input | ✕ | ✕ |
| Image/Audio Output | ✕ | ✕ |
| Function Calling / Tools | ✓ | ✓ |
| JSON Mode | ✓ | ✓ |
| Real-time Web Access | ✕ | ✕ |
| Fine-tuning Support | ✕ | ✕ |
| Batch API | ✓ | ✓ |
| Streaming | ✓ | ✓ |
| Open Source | ✕ | ✕ |
| Field | 3.5 Haiku | OpenAI o3-mini |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Knowledge Cutoff | 2024-07 | 2023-10 |
| Best For | fast taskshigh volumecost efficiencycoding | reasoningcodingmathcost efficiency |
Buy Anthropic Claude 3.5 Haiku if…
The Anthropic Claude 3.5 Haiku is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy OpenAI o3-mini if…
The OpenAI o3-mini is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Anthropic Claude 3.5 Haiku and OpenAI o3-mini are closely matched ai language models devices with nearly identical overall scores (6.5 vs 6.6). The best choice depends on which specific features matter most to you.
Both products score similarly — it depends on your priorities.
Check the latest prices using the buy links above.
The Anthropic Claude 3.5 Haiku is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
The OpenAI o3-mini is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.