Head-to-Head API Cost Benchmark

DeepSeek-V3 (Chat) vs GPT-4o: API Price & Latency Comparison

On a standard B2B production workload (5,000 req/day), DeepSeek-V3 (Chat) is 90.0% cheaper ($129.75/mo vs $1303.12/mo), while GPT-4o leads in token generation speed (85 tok/s).

Side-by-Side Specification & Billing Matrix

Metric DeepSeek-V3 (Chat) (DeepSeek API) GPT-4o (OpenAI) Advantage
Standard Input / 1M Tokens $0.270 $2.500 DeepSeek-V3 (Chat)
Cached Input / 1M Tokens $0.070 $1.250 DeepSeek-V3 (Chat)
Output Generation / 1M Tokens $1.10 $10.00 DeepSeek-V3 (Chat)
Intelligence / Benchmark Quality 1282 LMSYS Elo 1286 LMSYS Elo GPT-4o
Monthly Spend (5k req/day, 50% cache) $129.75 / mo $1303.12 / mo DeepSeek-V3 (Chat) (-90.0%)
Context Window 64,000 tokens 128,000 tokens GPT-4o
Output Speed (Throughput) 60 tokens/sec 85 tokens/sec GPT-4o
Batch API Discount -50% (DeepSeek API) -50% (OpenAI) DeepSeek API
Primary Workload Fit High-intelligence general tasks & translation where prompt caching saves 75%+ Complex multi-step customer facing workflows, vision + JSON structured outputs Workload Dependent
Deploy / Console Access Try DeepSeek-V3 (Chat) → Try GPT-4o → Open Full Simulator