Side-by-side comparison
Compare AI Models
Pick two to five models. Every cell comes from a verified record; anything unverified says so. There is no overall winner — the right choice depends on your task, budget and technical needs.
| Criterion | DeepSeek-V4-Pro | DeepSeek-V4.1-Flash | deepseek-chat and deepseek-reasoner API names deprecation |
|---|---|---|---|
| Provider | DeepSeek | DeepSeek | DeepSeek |
| Release date | Aug 13, 2026 | Sep 10, 2026 | Apr 24, 2026 |
| Status | Generally available | Generally available Updated | Deprecated Deprecated |
| Purpose | Flagship | Fast / lightweight | Reasoning |
| Inputs → outputs | text → text | text, image → text | text → text |
| Context window | 1,000,000 tokens | 1,000,000 tokens | Not documented |
| API input price | $1.32 per 1M tokens | $0.30 per 1M tokens | Not verified |
| API output price | $3.96 per 1M tokens | $1.20 per 1M tokens | Not verified |
| Example: 1,000,000 in + 200,000 out tokens | $2.11 | $0.54 | Cannot calculate — rate not verified |
| Licence | proprietary | proprietary | proprietary |
| Last verified | Oct 19, 2026 | Oct 19, 2026 | Oct 19, 2026 |
The example cost multiplies the published per-1M-token list prices by the token counts above. It ignores caching, batch discounts, long-context surcharges and tax, and is shown only when both rates are verified.
How to choose
Start from the rows that matter for your job: a free plan and learning curve for casual use; API access, rates and data terms for building products; context window and modalities for long documents or images. Provider claims are labelled as such; we do not rank.
Ready-made comparisons
AI assistants for beginnersGeneral-purpose assistants that need no setup.AI coding tools comparedEditors, agents and assistants that write, explain and review code.AI tools for academic researchPaper discovery, source-grounded answers and document analysis.Free AI tools comparedTools with a genuine free plan or free tier.AI for business automationWorkflow builders, agent platforms and enterprise assistants.AI image generators comparedText-to-image and editing tools.AI video generators comparedText-to-video, avatar and editing tools.AI model APIs comparedDeveloper platforms and inference providers.Open-weight and proprietary modelsModels you can download and run yourself next to hosted proprietary models.AI tools for studentsStudy, writing and research helpers with usable free plans.