Extended Thinking vs Open Reasoning
DeepSeek R1 (671B Reasoning) Saves 85%
Synced 2026-10-19
DeepSeek R1 (671B Reasoning) vs Claude 3.7 Sonnet (Extended Thinking) API Cost Calculator
Side-by-side FinOps unit economics audit comparing DeepSeek R1 (671B Reasoning) (DeepInfra) against Claude 3.7 Sonnet (Extended Thinking) (Anthropic). Switching or hybrid-routing 80% of traffic to DeepSeek R1 (671B Reasoning) cuts blended token spend by 85% and saves $68,508/mo ($822,096/yr) at 10,000 DAU.
Cost Efficiency Winner
DeepSeek R1 (671B Reasoning)
$0.912/1M blended tokens (85% lower than Claude 3.7 Sonnet (Extended Thinking) at $6.00/1M)
10,000 DAU Monthly Delta
$68,508/mo
Saves $822,096/year on 12.6B input + 2.88B output tokens/mo
Throughput & Latency Winner
DeepSeek R1 (671B Reasoning)
76 tok/s streaming speed (490ms 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) | Claude 3.7 Sonnet (Extended Thinking) (Anthropic) | Arbitrage Advantage |
|---|---|---|---|
| Input Price (per 1M tokens) | $0.50 / 1M | $3.00 / 1M | DeepSeek R1 (671B Reasoning) (6.0x cheaper) |
| Output Price (per 1M tokens) | $2.15 / 1M | $15.00 / 1M | DeepSeek R1 (671B Reasoning) (7.0x cheaper) |
| Cached Input Read (per 1M) | $0.14 / 1M | $0.30 / 1M | Prompt Cache Hit Discount Ready |
| Blended 3:1 RAG Rate (per 1M) | $0.912 / 1M | $6.00 / 1M | 85% savings with DeepSeek R1 (671B Reasoning) |
| Context Window / Max Output | 64K (64,000) / 16K out | 200K (200,000) / 128K out | Claude 3.7 Sonnet (Extended Thinking) larger context |
| Streaming Speed & TTFT | 76 tok/s (490ms TTFT) | 68 tok/s (650ms TTFT) | DeepSeek R1 (671B Reasoning) faster generation |
| Capabilities (Tools / Vision / Cache) | Tools: Yes · Vision: No · Cache: Yes | Tools: Yes · Vision: Yes · 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 | Claude 3.7 Sonnet (Extended Thinking) Monthly Bill | Monthly Savings (DeepSeek R1 (671B Reasoning)) |
|---|---|---|---|---|
| 1,000 DAU (Seed / MVP) | 1.26B in / 288M out | $1,249/mo | $8,100/mo | Save $6,851/mo |
| 10,000 DAU (Growth SaaS) | 12.6B in / 2.88B out | $12,492/mo | $81,000/mo | Save $68,508/mo ($822,096/yr) |
| 50,000 DAU (Enterprise Scale) | 63.0B in / 14.4B out | $62,460/mo | $405,000/mo | Save $342,540/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) | Claude 3.7 Sonnet (Extended Thinking) (Read @ $0.30/1M) | Combined Hybrid Router + 75% Cache |
|---|---|---|---|
| 0% Cache Hit (Cold Prompts) | $12,492/mo | $81,000/mo | $67,298/mo |
| 50% Cache Hit (Standard Chat) | $10,224/mo | $63,990/mo | $20,977/mo |
| 75% Cache Hit (Production Agent/RAG) | $9,090/mo | $55,485/mo | $18,369/mo |
| 90% Cache Hit (Heavy Document Context) | $8,410/mo | $50,382/mo | $16,804/mo |
4. Multi-Provider Host Arbitrage Table
Don't overpay default gateway markups. Compare verified inference hosts for both DeepSeek R1 (671B Reasoning) and Claude 3.7 Sonnet (Extended Thinking) 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) → |
| Claude 3.7 Sonnet (Extended Thinking) | Anthropic Direct | $3.00 | $15.00 | $0.30 | 68 tok/s | Deploy (Prompt Caching Ready) → |
| Claude 3.7 Sonnet (Extended Thinking) | OpenRouter | $3.00 | $15.00 | $0.30 | 66 tok/s | Deploy (Unified API for 470+ Models) → |
5. Frequently Asked Questions (DeepSeek R1 (671B Reasoning) vs Claude 3.7 Sonnet (Extended Thinking))
Is DeepSeek R1 (671B Reasoning) or Claude 3.7 Sonnet (Extended Thinking) cheaper per 1M tokens in production?
DeepSeek R1 (671B Reasoning) is 85% cheaper on a blended 3:1 input-to-output production workload ($0.912/1M blended vs $6.00/1M for Claude 3.7 Sonnet (Extended Thinking)). DeepSeek R1 (671B Reasoning) charges $0.50/1M input and $2.15/1M output, while Claude 3.7 Sonnet (Extended Thinking) charges $3.00/1M input and $15.00/1M output.
How much does DeepSeek R1 (671B Reasoning) vs Claude 3.7 Sonnet (Extended Thinking) 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 Claude 3.7 Sonnet (Extended Thinking) costs $81,000/month uncached ($55,485/mo with 75% prompt cache hits). Routing to DeepSeek R1 (671B Reasoning) saves $68,508/month ($822,096/year).
How much does Prompt Caching save on DeepSeek R1 (671B Reasoning) vs Claude 3.7 Sonnet (Extended Thinking)?
DeepSeek R1 (671B Reasoning) offers cached input reads at $0.14/1M tokens, while Claude 3.7 Sonnet (Extended Thinking) offers cached reads at $0.30/1M tokens. At a 75% system-prompt/RAG cache hit rate, DeepSeek R1 (671B Reasoning) monthly spend drops from $12,492 to $9,090, and Claude 3.7 Sonnet (Extended Thinking) drops from $81,000 to $55,485.
Which model has faster token generation speed and larger context: DeepSeek R1 (671B Reasoning) or Claude 3.7 Sonnet (Extended Thinking)?
DeepSeek R1 (671B Reasoning) delivers higher throughput at 76 tokens/sec (TTFT 490ms) compared to 68 tokens/sec. For context window, DeepSeek R1 (671B Reasoning) supports 64K tokens (64,000) while Claude 3.7 Sonnet (Extended Thinking) supports 200K tokens (200,000).
6. Related FinOps Comparisons & Model Calculators
DeepSeek R1 (671B Reasoning) Pricing Calculator
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