deepseek-reasoner · DeepSeek
Open-weights reasoning breakthrough: rivals OpenAI o1 on math, coding, and logical reasoning at a fraction of the cost ($0.55/$2.19).
Last checked Aug 19, 2026. Calculations use the listed base rates; provider-specific tiers, cache writes, batch pricing, and long-context rules may differ. Note: Cached inputs bill at $0.14/1M (75% discount). Confirm the current rate at the official provider source.
Input
$0.55
per 1M tokens
Output
$2.19
per 1M tokens
Cached input
$0.14
per 1M tokens
Context window
64K
max output 8K
DeepSeek R1 (Reasoner) cost calculator
What DeepSeek R1 (Reasoner) costs per task
| Use case | Input tokens | Output tokens | Cost / request | Monthly @ 1K req/day |
|---|---|---|---|---|
| Customer support chatbot | 3,500 | 350 | $0.001687 | $50.61 |
| RAG / search-augmented answers | 8,000 | 500 | $0.003855 | $115.65 |
| AI coding assistant | 12,000 | 2,000 | $0.008028 | $240.84 |
| Document summarization | 25,000 | 600 | $0.014 | $421.17 |
| Agentic workflow | 40,000 | 1,500 | $0.0146 | $438.75 |
| Content generation | 800 | 1,200 | $0.00297 | $89.088 |
| Data extraction & tagging | 2,000 | 250 | $0.001484 | $44.505 |
| Translation | 5,000 | 5,500 | $0.0145 | $434.625 |
Assumes each use case's typical cacheable share of input. See full cost scenarios.
Compare with alternatives
| Model | Input /M | Output /M | Context | Chat request* |
|---|---|---|---|---|
| DeepSeek R1 (Reasoner) | $0.55 | $2.19 | 64K | $0.003132 |
| GPT-5.6 Sol | $5.00 | $30.00 | 1.1M | $0.035 |
| GPT-5.6 Terra | $2.00 | $12.00 | 1.1M | $0.014 |
| GPT-5.6 Luna | $0.20 | $1.20 | 1.1M | $0.0014 |
| GPT-5.6 Cyber | $12.50 | $75.00 | 1.1M | $0.0875 |
| GPT-5.5 Standard | $5.00 | $30.00 | 512K | $0.035 |
| GPT-5.5 Pro | $30.00 | $180.00 | 512K | $0.21 |
| GPT-5.4 Workhorse | $2.50 | $15.00 | 256K | $0.0175 |
| GPT-5.4 mini | $0.75 | $4.50 | 256K | $0.00525 |
*4,000 in + 800 out tokens, 50% cached input where available.
Related calculations
FAQ
DeepSeek R1 (Reasoner) costs $0.55 per 1M input tokens and $2.19 per 1M output tokens, with cached input at $0.14 per 1M tokens. Verified Aug 19, 2026 against https://api-docs.deepseek.com/quick_start/pricing.
DeepSeek R1 (Reasoner) supports a 64,000-token context window with up to 8,000 output tokens per request, tokenized with deepseek_bpe.
At $0.55/M input and $2.19/M output, DeepSeek R1 (Reasoner) sits below GPT-5.6 Sol ($5.00/M in, $30.00/M out) — see the comparison table for full-workload differences.