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. | 8% | 39% |
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | May 28 2025 | Sep 15 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Other comparisons
DeepSeek R1-0528vsClaude Haiku 5.5GPT-5-CodexvsClaude Haiku 5.5DeepSeek R1-0528vsGemini 4 ArgonGPT-5-CodexvsGemini 4 ArgonDeepSeek R1-0528vsMuse WonderGPT-5-CodexvsMuse WonderDeepSeek R1-0528vsGrok 4.7GPT-5-CodexvsGrok 4.7DeepSeek R1-0528vsMistral Large 4GPT-5-CodexvsMistral Large 4DeepSeek R1-0528vsKimi K3GPT-5-CodexvsKimi K3Frequently asked questions
GPT-5-Codex leads DeepSeek R1-0528 on 1 of the 1 benchmark they both report (BullshitBench v2). DeepSeek R1-0528 shipped 110 days before GPT-5-Codex, so benchmark comparisons should account for the intervening progress.
DeepSeek R1-0528 is open weight, while GPT-5-Codex is closed.
On BullshitBench v2, GPT-5-Codex leads at 39% vs DeepSeek R1-0528 at 8%.