reasoning
O4 Mini vs Claude Haiku 4 5
Side-by-side pricing, context window, features, and per-use-case verdict. Data sourced from LiteLLM, updated regularly.
Specifications
| Feature | O4 Mini | Claude Haiku 4 5 |
|---|---|---|
| Provider | openai | anthropic |
| Model ID | o4-mini | claude-haiku-4-5 |
| Input / 1M tokens | $1.10 | $1.00 (9% cheaper) |
| Output / 1M tokens | $4.40 (12% cheaper) | $5.00 |
| Cached input / 1M | $0.28 | $0.10 |
| Context window | 200kk tokens | 200kk tokens |
| Max output | 100kk tokens | 64kk tokens |
| Vision | ✅ | ✅ |
| Function calling | ✅ | ✅ |
| Prompt caching | ✅ | ✅ |
| Web search | ✅ | ⬜ |
| JSON schema | ✅ | ✅ |
Monthly cost comparison
No cache discount applied — pure token costs at three usage scales.
| Scale | O4 Mini | Claude Haiku 4 5 | Winner |
|---|---|---|---|
| Small 1M in / 0.2M out | $1.98 | $2.00 | O4 Mini saves 1% |
| Medium 10M in / 2M out | $19.80 | $20.00 | O4 Mini saves 1% |
| Large 100M in / 20M out | $198 | $200 | O4 Mini saves 1% |
Category winners
Cheapest input
Claude Haiku 4 5
$1.00/M
· 9% less than the other
Cheapest output
O4 Mini
$4.40/M
· 12% less than the other
Larger context
O4 Mini
200kk tokens
More features
O4 Mini
5 / 5 capabilities
Better for…
High-volume RAG & repeated context
$0.10/M cached input — prompt caching makes repeated context retrieval significantly cheaper
Claude Haiku 4 5
Short interactions & high-throughput APIs
$4.40/M output — 12% cheaper on output at scale
O4 Mini
Agentic workflows & tool use
Supports 5 of 5 tracked capabilities (vision, function calling, caching, web search, JSON schema)
O4 Mini
Deep-dive on each model
Pricing data sourced from LiteLLM and refreshed regularly. Always verify with each provider's official pricing page before making business decisions.