# DeepSeek V4.1 Flash

As of 16 September 2026, DeepSeek V4.1 Flash costs $0.150 per million input tokens and $0.600 per million output tokens on OpenRouter. Observed on OpenRouter's own published price list on 16 September 2026. This is OpenRouter's resale price, not the model vendor's list price.

Source: OpenRouter (reseller)
Canonical page: https://bertrande.com/en/ai/openrouter/deepseek--deepseek-v4.1-flash/
Machine formats: https://bertrande.com/en/ai/openrouter/deepseek--deepseek-v4.1-flash/data.json | https://bertrande.com/en/ai/openrouter/deepseek--deepseek-v4.1-flash/data.csv
License: CC-BY-4.0, reuse with attribution and a link.

## Parameters

| Parameter | Value | Unit | Observed | Source level | Proof (SHA-256) |
|---|---|---|---|---|---|
| Input price | $0.150 | USD per 1M tokens | 2026-09-16 | L1 | `ee4d18e6ee4194eb` |
| Output price | $0.600 | USD per 1M tokens | 2026-09-16 | L1 | `ee4d18e6ee4194eb` |
| Context window | 1 048 576 | tokens | 2026-09-17 | L1 | `0d16223ff16c9c37` |
| Maximum output | 384 000 | tokens | 2026-09-17 | L1 | `0d16223ff16c9c37` |
| Intelligence index (Artificial Analysis) | 39.5 | index 0-100 | 2026-09-18 | L4 | `62c152853524cc69` |
| Input modalities | image, text | list | 2026-09-17 | L1 | `0d16223ff16c9c37` |
| Output modalities | text | list | 2026-09-17 | L1 | `0d16223ff16c9c37` |
| Cache read price | $0.003 | USD per 1M tokens | 2026-09-16 | L1 | `ee4d18e6ee4194eb` |
| Listed since | 2026-09-10 | date | 2026-09-17 | L1 | `0d16223ff16c9c37` |
| Supported parameters | frequency_penalty, include_reasoning, logit_bias, logprobs, max_tokens, min_p, presence_penalty, reasoning, reasoning_effort, repetition_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_logprobs, top_p | list | 2026-09-17 | L1 | `f62375deb05e5865` |
| Input price (weekdays 00:00 to 01:00 UTC; weekdays 04:00 to 06:00 UTC; weekdays 10:00 to 00:00 UTC; weekends (all day, UTC)) | $0.150 | USD per 1M tokens | 2026-09-10 | L1 | `c03ee0b02cc849dd` |
| Input price (weekdays 01:00 to 04:00 UTC; weekdays 06:00 to 10:00 UTC) | $0.300 | USD per 1M tokens | 2026-09-17 | L1 | `f62375deb05e5865` |
| Output price (weekdays 00:00 to 01:00 UTC; weekdays 04:00 to 06:00 UTC; weekdays 10:00 to 00:00 UTC; weekends (all day, UTC)) | $0.600 | USD per 1M tokens | 2026-09-10 | L1 | `c03ee0b02cc849dd` |
| Output price (weekdays 01:00 to 04:00 UTC; weekdays 06:00 to 10:00 UTC) | $1.20 | USD per 1M tokens | 2026-09-17 | L1 | `f62375deb05e5865` |
| Cache read price (weekdays 00:00 to 01:00 UTC; weekdays 04:00 to 06:00 UTC; weekdays 10:00 to 00:00 UTC; weekends (all day, UTC)) | $0.003 | USD per 1M tokens | 2026-09-10 | L1 | `c03ee0b02cc849dd` |
| Cache read price (weekdays 01:00 to 04:00 UTC; weekdays 06:00 to 10:00 UTC) | $0.006 | USD per 1M tokens | 2026-09-17 | L1 | `f62375deb05e5865` |

## How this is verified

Every value above was read from the source URL shown on the canonical page, on the date given. We store a SHA-256 fingerprint of the source content at that moment, which is what lets us show later what the source said that day.

No value here was produced, estimated or completed by a language model. Where we have no verified figure, the row is absent rather than filled in.

Method: https://bertrande.com/en/methodology/
Report an error: https://bertrande.com/en/corrections/