Model comparison
DeepSeek V4.1 Flash vs DeepSeek V4 Pro (Thinking)
Price history, scores and specs for both models, line by line. Every value shows where it came from and when we last confirmed it.
DeepSeek
DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture.
DeepSeek
DeepSeek V4 Pro (Thinking)
Flagship DeepSeek model for coding, reasoning, and agentic work.
Price history
Prices side by side, day by day
- DeepSeek V4.1 Flash
- DeepSeek V4 Pro (Thinking) No price history checked yet
- DeepSeek V4.1 Flash
- DeepSeek V4 Pro (Thinking) No price history checked yet
Prices are the listed OpenRouter base rates in US dollars. A day we could not confirm is left out of the line, never filled in.
Price
What each one costs now
| Measure | DeepSeek V4.1 Flash | DeepSeek V4 Pro (Thinking) |
|---|---|---|
| Input price | $0.051 per million tokens | Not checked yet |
| Output price | $0.567 per million tokens | Not checked yet |
Scores
Benchmarks, with source and date
| Measure | DeepSeek V4.1 Flash | DeepSeek V4 Pro (Thinking) |
|---|---|---|
| Artificial Analysis Intelligence Index | 24.7 | Not checked yet |
| LMArena text rating (Elo) | 1,463 | Not checked yet |
| LMArena web development rating (Elo) | 1,664 | Not checked yet |
| LMArena vision rating (Elo) | 1,279 | Not checked yet |
Specs
Context, modalities and tool use
| Measure | DeepSeek V4.1 Flash | DeepSeek V4 Pro (Thinking) |
|---|---|---|
| Context window | 1,048,576 tokens | Not checked yet |
| Reads | Text, Images | Not checked yet |
| Writes | Text | Not checked yet |
| Tool calling | Yes | Not checked yet |
| Reasoning mode | Yes | Not checked yet |
| Open weights | Yes | Not checked yet |
| Listed since | 10 Sept 2026 | Not checked yet |
Usage
How much each one is used
| Measure | DeepSeek V4.1 Flash | DeepSeek V4 Pro (Thinking) |
|---|---|---|
| Tokens served on OpenRouter in a day | 2.3T (for 10 Nov 2026) | Not checked yet |
| Requests on OpenRouter in a day | 76M (for 10 Nov 2026) | Not checked yet |
| Tool calls on OpenRouter in a day | 20.1M (for 10 Nov 2026) | Not checked yet |
| Token usage, last 7 days | Up 8% on the week before (for 10 Nov 2026) | Not checked yet |
- DeepSeek V4.1 Flash
- DeepSeek V4 Pro (Thinking) No usage checked yet
How this works
One link, either order
This link stays the same whichever order you name the two models in, so you can share it as it is. A line appears only when at least one model has a value we confirmed from a source; values we have not confirmed are left out, never guessed. To add a third record of any type, use the open comparison. Read how we check facts.