⚡ VERIFIED HEAD-TO-HEAD FINOPS & LATENCY AUDIT • ★ 4.8/5 (355 Reviews)
DeepSeek V4 Pro vs OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA): $1.99 vs $2.00 / 1M Tokens
Switching a 100M input / 20M output monthly workload from OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) to DeepSeek V4 Pro saves $21.80/month ($261.60/year, -14%) on baseline token rates. For streaming responsiveness, OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) leads with a 410ms P90 TTFT (98 tok/s).
Contender A • DEEPSEEK
DeepSeek V4 Pro
Standard Input / Output:$1.99 / $6.96
Warm Cache Read / Write:$0.199 / $2.487
Batch API (50% Off):$0.995 / $3.48
Context Window & Cliff:128,000 tokens
P90 TTFT / Throughput:414ms / 77 tok/s
Contender B • OpenAI
OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA)
Standard Input / Output:$2.00 / $8.00
Warm Cache Read / Write:$0.5 / $2
Batch API (50% Off):$1 / $4
Context Window & Cliff:1,000,000 tokens
P90 TTFT / Throughput:410ms / 98 tok/s
⚡ CONTEXT-MODE SANDBOX (315KB → 5.4KB) × ETUKI CACHE PINNING BENCHMARKOpen Full Context-Mode Calculator →
Coding Agent TCO (100 Sessions): Raw Tool Output (700KB) vs. Context-Mode + Etuki Prefix Cache
| Execution Mode (100 Agent Sessions) | DeepSeek V4 Pro | OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) | Architectural Mechanism |
|---|---|---|---|
| Mode A: Direct Raw Tool Output (700 KB) | $376.09 | $382.00 | 47 × Read() dumped into context; hits 200K cliff |
| Mode B: Context-Mode Sandbox Only (3.6 KB) | $65.65 | $60.00 | SQLite FTS5 & ctx_execute (98% byte drop, unpinned cache) |
| Mode C: Context-Mode + Etuki 4-Block Cache Lock | $26.36 (-93%) | $33.50 (-91%) | 98% tool stdout folding + 90% warm 0.1x prefix cache hit |
Monthly Enterprise Workload TCO: DeepSeek V4 Pro vs OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA)
| Workload Scenario | DeepSeek V4 Pro (Cached) | OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) (Cached) | Recommended Routing Winner |
|---|---|---|---|
| ① Coding Agent (15M In / 3M Out) | $29.24/mo | $36.00/mo | DeepSeek V4 Pro |
| ② Enterprise RAG (100M In / 15M Out) | $160.12/mo | $200.00/mo | DeepSeek V4 Pro |
| ③ Long-Doc SEC Analysis (250M In / 30M Out) | $348.10/mo | $440.00/mo | DeepSeek V4 Pro |
| ④ Async Batch Pipeline (500M In / 80M Out) | $775.90/mo | $820.00/mo | DeepSeek V4 Pro (50% Batch Discount) |