Claude 3.5 Sonnetvso3-mini
Claude 3.5 Sonnet | 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. | — | $1.10 |
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. | — | $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. | — | $0.55 |
| 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. | 33.4% | 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. | 46% | — |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 59.4% | — |
| Overview | ||
| Company | Anthropic | OpenAI |
| Release date | Jun 20 2024 | Jan 31 2025 |
| Access | Proprietary | Proprietary |
Other comparisons
Claude 3.5 SonnetvsGemini 3.8 Flasho3-minivsGemini 3.8 FlashClaude 3.5 SonnetvsMuse Spark 1.3o3-minivsMuse Spark 1.3Claude 3.5 SonnetvsGrok 4.6o3-minivsGrok 4.6Claude 3.5 SonnetvsDeepSeek-V4.1-Flasho3-minivsDeepSeek-V4.1-FlashClaude 3.5 SonnetvsMistral Medium 3.5o3-minivsMistral Medium 3.5Claude 3.5 SonnetvsKimi K3o3-minivsKimi K3
Frequently asked questions
o3-mini leads Claude 3.5 Sonnet on 1 of the 1 benchmark they both report (SWE-Bench Verified). Only o3-mini has a verified first-party API price: $1.10 per million input tokens and $4.40 per million output tokens. No pay-as-you-go API rate is tracked for Claude 3.5 Sonnet. Claude 3.5 Sonnet shipped 225 days before o3-mini, 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, o3-mini leads at 49.3% vs Claude 3.5 Sonnet at 33.4%.