DeepSeek-V4-Flash-0731vsGPT-5 Pro
DeepSeek-V4-Flash-0731 | GPT-5 Pro | |
|---|---|---|
| API pricingUSD per 1M tokens · lower wins · base tier | ||
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it. | $0.22 | $15.00 |
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. | $0.66 | $120.00 |
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. | $0.007 | — |
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. | $0.03OpenInference | — |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $0.075OpenInference | — |
| 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. | 38% | — |
Terminal-Bench 2.1Agentic terminal coding — Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | 82.7% | — |
Toolathlon-VerifiedPersonal tool use — Tests how well the AI uses everyday personal tools and apps to get things done — a human-checked version of Toolathlon. Higher is better. | 70.3% | — |
CyberGymCybersecurity — Tests the AI on cybersecurity challenges — finding and exploiting software weaknesses inside a safe sandbox. Higher is better. | 76.7% | — |
AutomationBenchBusiness workflows — Tests whether the AI can run real multi-step business workflows — the kind of end-to-end office processes companies want to automate — from start to finish. Higher is better. | 25.1% | — |
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | Jul 31 2026 | Aug 7 2025 |
| Access | Proprietary | Proprietary |
Other comparisons
Frequently asked questions
DeepSeek-V4-Flash-0731 and GPT-5 Pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek-V4-Flash-0731 is cheaper on both input and output: $0.22 vs $15.00 per million input tokens, and $0.66 vs $120.00 per million output tokens. Figures are base-tier rates. GPT-5 Pro shipped 358 days before DeepSeek-V4-Flash-0731, 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.
Direct benchmark comparisons are unavailable — DeepSeek-V4-Flash-0731 and GPT-5 Pro don't publish scores on any of the same benchmarks.
DeepSeek-V4-Flash-0731 was released by DeepSeek on Jul 31 2026.
GPT-5 Pro was released by OpenAI on Aug 7 2025.
DeepSeek-V4-Flash-0731 is cheaper on both input and output: $0.22 vs $15.00 per million input tokens, and $0.66 vs $120.00 per million output tokens. Figures are base-tier rates. Rates are pay-as-you-go API prices verified on August 18, 2026.