// DeepSeek
DeepSeek V4.1 Flash
A DeepSeek model. 11 prices across 11 channels side by side, each with its source and check date – plus specs, licence, speed and benchmarks.
- Official in/out per 1M
- ¥2 / ¥8
- Lowest (DeepInfra)
- $0.14 / $0.42
- Context
- 1M
- AA index
- 39.5
Prices checked 2026-10-22Official sources linked on every rowNo estimates
01Specs at a glance
Official values first; gaps filled from OpenRouter’s API where the vendor page is silent.
| Vendor | DeepSeek |
|---|---|
| Context window | 1M (1,000,000 tokens) |
| Max output | 384K |
| Input | Text · Image |
| Output | Text |
| Tool calling / JSON | Yes / Yes |
| Weights & licence | Open weights · MIT · Hugging Face |
| Parameters | 763B (from weight files) |
| Released | Sep 10, 2026 |
| Model IDs | deepseek-flash · deepseek/deepseek-v4.1-flash · deepseek-v4.1-flash |
02Prices on 11 channels
Per 1M tokens, in the currency each source publishes (1 USD = 6.7 CNY for the blended column). Sorted: official first, then cheapest.
| Channel | Source | Input | Output | Cache hit | Blended $ | Context | Notes |
|---|---|---|---|---|---|---|---|
| Official Vendor’s China site, billed in CNY | Official 10-19 | ¥2 | ¥8 | ¥0.04 | 0.522 | 1M | off-peak: 1/4 Model version DeepSeek-V4.1-Flash-1017 (2026-10-17 snapshot; old names deepseek-v4-flash / deepseek-v4-flash-vision-exp also routed to it at Flash price). Peak = Mon–Fri 09:00–12:00 & 14:00–18:00 Beijing excl. CN public holidays; off-peak 50% off. New Search / Fetch API: 5 CNY per 1,000 successful requests each; server-side Search/Fetch inside DeepSeek Harness / Claude Code / Codex is free until billing starts 2026-11-01 00:00 Beijing. |
| DeepInfra · fp8 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.14 | $0.42 | $0.0042 | 0.21 | 1.05M | DeepInfra price as listed on OpenRouter (pass-through; quantization=fp8; discount field=0.3); not checked against DeepInfra's own page |
| AtlasCloud · fp8 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.135 | $0.54 | $0.013 | 0.236 | 1.05M | AtlasCloud price as listed on OpenRouter (pass-through; quantization=fp8; discount field=0); not checked against AtlasCloud's own page |
| GMICloud · fp8 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.18 | $0.72 | $0.0036 | 0.315 | 1.05M | GMICloud price as listed on OpenRouter (pass-through; quantization=fp8; discount field=0.4); not checked against GMICloud's own page |
| Novita · fp8 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.195 | $0.78 | $0.0039 | 0.341 | 1.05M | Novita price as listed on OpenRouter (pass-through; quantization=fp8; discount field=0.35); not checked against Novita's own page |
| Together Inference platform (own price page) | Platform 10-10 | $0.3 | $1.2 | $0.006 | 0.525 | 1.05M | Together AI own pricing page |
| Fireworks Inference platform (own price page) | Platform 10-10 | $0.3 | $1.2 | $0.006 | 0.525 | 1.05M | Batch −50%Fireworks AI own pricing page; batch -50% |
| BaseTen · fp8 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.3 | $1.2 | $0.007 | 0.525 | 1.05M | BaseTen price as listed on OpenRouter (pass-through; quantization=fp8; discount field=0); not checked against BaseTen's own page |
| SiliconFlow · fp8 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.3 | $1.2 | $0.006 | 0.525 | 1.05M | SiliconFlow price as listed on OpenRouter (pass-through; quantization=fp8; discount field=0); not checked against SiliconFlow's own page |
| Parasail · fp8 Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.3 | $1.2 | $0.006 | 0.525 | 1.05M | Parasail price as listed on OpenRouter (pass-through; quantization=fp8; discount field=0); not checked against Parasail's own page |
| Alibaba Cloud · unknown Via OpenRouter / provider listed there | OpenRouter 10-22 | $0.33 | $1.32 | $0.033 | 0.578 | 1M | Alibaba price as listed on OpenRouter (pass-through; quantization=unknown); Alibaba Cloud; promoted from endpoint candidates 2026-10-14; not checked against the provider's own page |
“Official” = vendor pricing page; “Platform” = the platform’s own pricing page; “OpenRouter” = price listed on OpenRouter, not checked on the platform’s site. Click a source tag to open the original page.
03Where you can use it
Derived only from the price sources above. Country restrictions are set by each vendor – check their terms before you sign up.
- Vendor’s China site, billed in CNY
Official - Via OpenRouter / provider listed there
DeepInfra · AtlasCloud · GMICloud · Novita · BaseTen · SiliconFlow · Parasail · Alibaba Cloud - Inference platform (own price page)
Together · Fireworks - Self-host the open weights
GPU / VRAM sizing and build plans→ - Free option
DeepSeek-V4.1-Flash→ - Free option
DeepSeek-V4.1-Flash-1017→
04Performance
Speed and AA index from Artificial Analysis public leaderboards (not our own tests); benchmark scores from our benchmark library, best result per benchmark.
- AA indexDeepSeek V4.1 Flash (Max)
- 39.5
- Output speed (median)
- 214 tok/s
- Time to first token
- 1s
- AA index per $ (blended)
- 75.53
| Benchmark | Best score | Source | Date |
|---|---|---|---|
| GPQA Diamond | 89.8% | independent | 2026-10-09 |
| AIME (OTIS Mock AIME 2024–2025) | 98.3% | independent | 2026-10-08 |
05Price changes we recorded
All price changes →From our daily re-checks of the sources above.
- 2026-10-20 · Alibaba Cloud · cache read0.03 → 0.033 USD (+10%)
- 2026-10-20 · Alibaba Cloud · output1.2 → 1.32 USD (+10%)
- 2026-10-20 · Alibaba Cloud · input0.3 → 0.33 USD (+10%)
- 2026-10-19 · AtlasCloud · cache read0.00384 → 0.0135 USD (+251.6%)
- 2026-10-19 · AtlasCloud · output0.768 → 0.54 USD (-29.7%)
- 2026-10-19 · AtlasCloud · input0.192 → 0.135 USD (-29.7%)
- 2026-10-15 · AtlasCloud · cache read0.03 → 0.00384 USD (-87.2%)
- 2026-10-15 · AtlasCloud · output1.2 → 0.768 USD (-36%)
- 2026-10-15 · AtlasCloud · input0.3 → 0.192 USD (-36%)
- 2026-10-14 · Alibaba Cloud · new listing
06More from DeepSeek
- DeepSeek V4.1 Flash 1017
$0.098 / 0.294 · 1.05M→ - DeepSeek V4 Flash Vision Exp
$0.216 / 0.647 · 1.05M→ - DeepSeek-V4-Flash
$0.06 / 0.18 · 1.05M→ - DeepSeek-V4-Pro
$0.957 / 1.91 · 1M→ - DeepSeek V3
$0.209 / 0.31 · 164K→ - DeepSeek V3.2 Exp
$0.27 / 0.41 · 164K→ - DeepSeek V3.1 Terminus
$0.27 / 1 · 164K→ - DeepSeek-V3.1
$0.25 / 0.95 · 164K→
FAQ
How much does the DeepSeek V4.1 Flash API cost?
On the official pricing page: ¥2 / ¥8 per 1M input / output tokens, cached input ¥0.04 (checked 2026-10-19). The lowest price we found is $0.14 / $0.42 on DeepInfra.
What is the context window of DeepSeek V4.1 Flash?
1M tokens of context, up to 384K output tokens. Platforms may cap it lower – see the table.
Is DeepSeek V4.1 Flash open source?
Yes, the weights are published on Hugging Face (deepseek-ai/DeepSeek-V4.1-Flash). Licence: MIT.