DeepSeek / deepseek/deepseek-flash
DeepSeek V4.1 Flash - access through LLMTR
DeepSeek V4.1 Flash serves DeepSeek's current V4.1 Flash release (1017 as of 17 October 2026), with a 1M-token context window and up to 384K output. Image input, tool calls and JSON output are supported; images are accepted both as base64 data URIs and as remote https links. Thinking mode is on by default. Repeated prefix input bills at the lower cache-hit rate. DeepSeek applies peak-hour pricing to this model: every token item costs double on weekdays (Monday-Friday, Beijing time) between 01:00-04:00 and 06:00-10:00 UTC. Weekends and Chinese public holidays bill at the off-peak rate all day.
Technical specifications
| Canonical ID | deepseek/deepseek-flash |
|---|---|
| Provider | DeepSeek |
| Context window | 1,000,000 tokens |
| Operations | CHAT_COMPLETIONS |
| Modalities | text, image |
Pricing
An 8% platform margin applies to credit top-ups; model usage prices are not separately marked up.
| Operation | Metric | Unit | Price |
|---|---|---|---|
| CHAT_COMPLETIONS | INPUT_TEXT | PER_1M_TOKENS | $0.150000 |
| CHAT_COMPLETIONS | CACHE_READ | PER_1M_TOKENS | $0.003000 |
| CHAT_COMPLETIONS | OUTPUT_TEXT | PER_1M_TOKENS | $0.600000 |
Example usage
With existing OpenAI SDK flows, change only the base URL and model identifier.
curl https://llmtr.com/v1/chat/completions -H "Authorization: Bearer llmtr-your_key" -H "Content-Type: application/json" -d '{"model":"deepseek/deepseek-flash","messages":[{"role":"user","content":"Hello"}]}'Guides about this model
- Atria-Dawn vs Atria-Dawn Preview: stable release or open preview - Both rows are called on LLMTR with the same API key through /v1/chat/completions; they offer a 524,288-token context, text-only input, json_schema and tool calling, and they are free until 31 October 2026, 23:59 (TRT). Atria-Dawn is the stable release; Atria-Dawn Preview is the preview whose weights are open under the MIT license.
- Reasoning and the daily token allowance on Shanghai AI Lab models - All five rows reason before answering by default, and reasoning tokens count toward both max_tokens and the daily token allowance. To turn reasoning off, send "reasoning": false or add :fast to the model id; reasoning_effort returns 400. The rows are free until 31 October 2026, 23:59 (TRT).
- Long-document extraction with Atria-Dawn and JSON Schema - Atria-Dawn can read a long document in one request and return fields that follow a strict JSON Schema, and it is free until 31 October 2026, 23:59 (TRT). Input, output and reasoning share the same context window and the same daily allowance; turning reasoning off for extraction saves tokens.
- Shanghai AI Lab models after 1 November 2026: migration guide - The five Shanghai AI Lab models are free until 31 October 2026, 23:59 (TRT); from 1 November 2026, 00:00, they return 410 model_retired and are not redirected. Scientific questions with images and image-reading agents move to Nemotron 3.5 Super VL or Qwen3.6 35B-A3B; long text-based agent work moves to Nemotron 3 Ultra, Agnes 2.5 Flash, DeepSeek V4.1 Flash or MiniMax M3.1 Flash.
- 1M-context Flash models: MiniMax, DeepSeek, Qwen and GLM - On LLMTR all four models have a 1,000,000-token context and are called with the same API key on /v1/chat/completions. Their prices are close; the differences are in the output limit per response, video input, reasoning control, JSON support and DeepSeek's weekday peak-hour price.
- DeepSeek V4.1 Flash 1017: which model id to choose - DeepSeek V4.1 Flash 1017 is called on LLMTR with three ids. The row that, per the provider's statement, processes requests inside the European Union is TensorX's. If cost comes first, deepseek/deepseek-v4.1-flash-1017 serves the same release at a lower price that does not change by hour; deepseek/deepseek-flash follows DeepSeek's current release.
Related models
- DeepSeek V4 Pro deepseek/deepseek-v4-pro
- DeepSeek V4.1 Flash 1017 deepseek/deepseek-v4.1-flash-1017
- DeepSeek V4 Pro 0813 deepseek/deepseek-v4-pro-0813
- Gemma 4 llmtr/gemma-4
- Qwen 3.6 35B-A3B llmtr/qwen3-6-35b
- Qwen 3.8 27B llmtr/qwen3-8-27b
- Trendyol Asure 12B llmtr/trendyol-asure-12b
- Magibu 11B v8 llmtr/magibu-11b-v8