Claude Haiku 4.5vso3-mini
Claude Haiku 4.5 | o3-mini | |
|---|---|---|
| API pricingUSD per 1M tokens · lower wins | ||
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it. | $1.00 | $1.10 |
Output priceWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one. | $5.00 | $4.40 |
Cached input priceA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again. | $0.10 | $0.55 |
Cheapest inputLowest input rate across third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $1.00Amazon Bedrock | — |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $5.00Amazon Bedrock | — |
| Benchmarks | ||
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 73.3% | 49.3% |
| BenchmarksPublished by one model only | ||
BullshitBench v2Nonsense detection — Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 77% | — |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 73% | — |
| Overview | ||
| Company | Anthropic | OpenAI |
| Release date | Oct 15 2025 | Jan 31 2025 |
| Access | Proprietary | Proprietary |
Other comparisons
Frequently asked questions
Claude Haiku 4.5 leads o3-mini on 1 of the 1 benchmark they both report (SWE-Bench Verified). Claude Haiku 4.5 is cheaper on input: $1.00 vs $1.10 per million tokens. o3-mini is cheaper on output: $4.40 vs $5.00 per million tokens. o3-mini shipped 257 days before Claude Haiku 4.5, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
On SWE-Bench Verified, Claude Haiku 4.5 leads at 73.3% vs o3-mini at 49.3%.
Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.
o3-mini was released by OpenAI on Jan 31 2025.
Claude Haiku 4.5 leads on SWE-Bench Verified — Claude Haiku 4.5 73.3% vs o3-mini 49.3%.
Claude Haiku 4.5 is cheaper on input: $1.00 vs $1.10 per million tokens. o3-mini is cheaper on output: $4.40 vs $5.00 per million tokens. Rates are pay-as-you-go API prices verified on August 18, 2026.