Compare AI models
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across every provider on OpenRouter, the lab included. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | — | $0.50DeepInfra |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | — | $2.15DeepInfra |
| — | $208DeepInfra · fp4 | |
| Benchmarks | ||
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% | 8% |
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% | — |
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 | DeepSeek |
| Release date | Jun 20 2024 | May 28 2025 |
| Access | Closed | Open Weight |
| Model details | View model | View model |
Other comparisons
Claude 3.5 SonnetvsGPT-6.1 SolDeepSeek R1-0528vsGPT-6.1 SolClaude 3.5 SonnetvsGemini 4 ArgonDeepSeek R1-0528vsGemini 4 ArgonClaude 3.5 SonnetvsMuse WonderDeepSeek R1-0528vsMuse WonderClaude 3.5 SonnetvsGrok 4.7DeepSeek R1-0528vsGrok 4.7Claude 3.5 SonnetvsMistral Large 4DeepSeek R1-0528vsMistral Large 4Claude 3.5 SonnetvsKimi K3DeepSeek R1-0528vsKimi K3Frequently asked questions
Claude 3.5 Sonnet leads DeepSeek R1-0528 on 1 of the 1 benchmark they both report (BullshitBench v2). Claude 3.5 Sonnet shipped 342 days before DeepSeek R1-0528, so benchmark comparisons should account for the intervening progress.
Claude 3.5 Sonnet is closed, while DeepSeek R1-0528 is open weight.
On BullshitBench v2, Claude 3.5 Sonnet leads at 46% vs DeepSeek R1-0528 at 8%.