Reasoning Unit Economics
DeepSeek R1 (671B Reasoning) Saves 53%
Synced 2026-10-19
DeepSeek R1 (671B Reasoning) vs OpenAI o3-mini API Cost Calculator
Side-by-side FinOps unit economics audit comparing DeepSeek R1 (671B Reasoning) (DeepInfra) against OpenAI o3-mini (OpenAI). Switching or hybrid-routing 80% of traffic to DeepSeek R1 (671B Reasoning) cuts blended token spend by 53% and saves $14,040/mo ($168,480/yr) at 10,000 DAU.
Cost Efficiency Winner
DeepSeek R1 (671B Reasoning)
$0.912/1M blended tokens (53% lower than OpenAI o3-mini at $1.93/1M)
10,000 DAU Monthly Delta
$14,040/mo
Saves $168,480/year on 12.6B input + 2.88B output tokens/mo
Throughput & Latency Winner
OpenAI o3-mini
118 tok/s streaming speed (520ms TTFT)
1. Side-by-Side Token Pricing, Context Window & Speed Matrix
Exact API pricing per 1 Million tokens (Input, Output, and Prompt Cache Read), maximum context window, and real-world streaming throughput.
| FinOps Metric | DeepSeek R1 (671B Reasoning) (DeepInfra) | OpenAI o3-mini (OpenAI) | Arbitrage Advantage |
|---|---|---|---|
| Input Price (per 1M tokens) | $0.50 / 1M | $1.10 / 1M | DeepSeek R1 (671B Reasoning) (2.2x cheaper) |
| Output Price (per 1M tokens) | $2.15 / 1M | $4.40 / 1M | DeepSeek R1 (671B Reasoning) (2.0x cheaper) |
| Cached Input Read (per 1M) | $0.14 / 1M | $0.55 / 1M | Prompt Cache Hit Discount Ready |
| Blended 3:1 RAG Rate (per 1M) | $0.912 / 1M | $1.93 / 1M | 53% savings with DeepSeek R1 (671B Reasoning) |
| Context Window / Max Output | 64K (64,000) / 16K out | 200K (200,000) / 100K out | OpenAI o3-mini larger context |
| Streaming Speed & TTFT | 76 tok/s (490ms TTFT) | 118 tok/s (520ms TTFT) | OpenAI o3-mini faster generation |
| Capabilities (Tools / Vision / Cache) | Tools: Yes · Vision: No · Cache: Yes | Tools: Yes · Vision: No · Cache: Yes | JSON Mode: Both Supported |
2. Monthly SaaS Cloud Bill Simulation (1,000 DAU / 10,000 DAU / 50,000 DAU)
Simulated monthly API spend for a production AI SaaS application (12 requests per active user/day, 3,500 input tokens + 800 output tokens per turn, 30 days/month).
| SaaS Scale Tier | Monthly Token Volume | DeepSeek R1 (671B Reasoning) Monthly Bill | OpenAI o3-mini Monthly Bill | Monthly Savings (DeepSeek R1 (671B Reasoning)) |
|---|---|---|---|---|
| 1,000 DAU (Seed / MVP) | 1.26B in / 288M out | $1,249/mo | $2,653/mo | Save $1,404/mo |
| 10,000 DAU (Growth SaaS) | 12.6B in / 2.88B out | $12,492/mo | $26,532/mo | Save $14,040/mo ($168,480/yr) |
| 50,000 DAU (Enterprise Scale) | 63.0B in / 14.4B out | $62,460/mo | $132,660/mo | Save $70,200/mo |
3. Prompt Caching Savings Math (At 10,000 DAU Workload)
Long system prompts, RAG document context, and multi-turn agent histories qualify for automatic or explicit prompt caching. Here is how cache hit rates change your monthly cloud bill:
| Prompt Cache Hit Rate | DeepSeek R1 (671B Reasoning) (Read @ $0.14/1M) | OpenAI o3-mini (Read @ $0.55/1M) | Combined Hybrid Router + 75% Cache |
|---|---|---|---|
| 0% Cache Hit (Cold Prompts) | $12,492/mo | $26,532/mo | $23,724/mo |
| 50% Cache Hit (Standard Chat) | $10,224/mo | $23,067/mo | $12,793/mo |
| 75% Cache Hit (Production Agent/RAG) | $9,090/mo | $21,335/mo | $11,539/mo |
| 90% Cache Hit (Heavy Document Context) | $8,410/mo | $20,295/mo | $10,787/mo |
4. Multi-Provider Host Arbitrage Table
Don't overpay default gateway markups. Compare verified inference hosts for both DeepSeek R1 (671B Reasoning) and OpenAI o3-mini sorted by lowest blended cost:
| Model | Inference Host / Gateway | Input / 1M | Output / 1M | Cache Read / 1M | Speed | Deploy / Credits Link |
|---|---|---|---|---|---|---|
| DeepSeek R1 (671B Reasoning) | DeepInfra (Serverless) Cheapest Host | $0.50 | $2.15 | $0.14 | 76 tok/s | Deploy (Get $50 Free API Credits) → |
| DeepSeek R1 (671B Reasoning) | Fireworks AI (Fast R1) | $0.55 | $2.19 | $0.28 | 128 tok/s | Deploy ($50 Free FireAttention Credits) → |
| DeepSeek R1 (671B Reasoning) | Together AI | $0.55 | $2.19 | $0.28 | 88 tok/s | Deploy ($25 Free Inference Credits) → |
| DeepSeek R1 (671B Reasoning) | DeepSeek Official (75% Off-Peak) | $0.55 | $2.19 | $0.14 | 52 tok/s | Deploy (US-Hosted Zero-Logging via DeepInfra) → |
| OpenAI o3-mini | OpenAI Direct | $1.10 | $4.40 | $0.55 | 118 tok/s | Deploy (Route with 0% Markup Fallback) → |
| OpenAI o3-mini | OpenRouter | $1.10 | $4.40 | $0.55 | 114 tok/s | Deploy (Unified API for 470+ Models) → |
5. Frequently Asked Questions (DeepSeek R1 (671B Reasoning) vs OpenAI o3-mini)
Is DeepSeek R1 (671B Reasoning) or OpenAI o3-mini cheaper per 1M tokens in production?
DeepSeek R1 (671B Reasoning) is 53% cheaper on a blended 3:1 input-to-output production workload ($0.912/1M blended vs $1.93/1M for OpenAI o3-mini). DeepSeek R1 (671B Reasoning) charges $0.50/1M input and $2.15/1M output, while OpenAI o3-mini charges $1.10/1M input and $4.40/1M output.
How much does DeepSeek R1 (671B Reasoning) vs OpenAI o3-mini cost at 10,000 Daily Active Users (DAU)?
At 10,000 DAU (360,000 requests/day at 3,500 input + 800 output tokens), DeepSeek R1 (671B Reasoning) costs $12,492/month uncached ($9,090/mo with 75% prompt cache hits), whereas OpenAI o3-mini costs $26,532/month uncached ($21,335/mo with 75% prompt cache hits). Routing to DeepSeek R1 (671B Reasoning) saves $14,040/month ($168,480/year).
How much does Prompt Caching save on DeepSeek R1 (671B Reasoning) vs OpenAI o3-mini?
DeepSeek R1 (671B Reasoning) offers cached input reads at $0.14/1M tokens, while OpenAI o3-mini offers cached reads at $0.55/1M tokens. At a 75% system-prompt/RAG cache hit rate, DeepSeek R1 (671B Reasoning) monthly spend drops from $12,492 to $9,090, and OpenAI o3-mini drops from $26,532 to $21,335.
Which model has faster token generation speed and larger context: DeepSeek R1 (671B Reasoning) or OpenAI o3-mini?
OpenAI o3-mini delivers higher throughput at 118 tokens/sec (TTFT 520ms) compared to 76 tokens/sec. For context window, DeepSeek R1 (671B Reasoning) supports 64K tokens (64,000) while OpenAI o3-mini supports 200K tokens (200,000).
6. Related FinOps Comparisons & Model Calculators
DeepSeek R1 (671B Reasoning) Pricing Calculator
Full host arbitrage & DAU cost breakdown →
OpenAI o3-mini Pricing Calculator
Full host arbitrage & DAU cost breakdown →
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