Head-to-Head API Cost Benchmark

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

On a standard B2B production workload (5,000 req/day), GPT-4o mini is 39.7% cheaper ($78.19/mo vs $129.75/mo), while GPT-4o mini leads in token generation speed (140 tok/s).

Side-by-Side Specification & Billing Matrix

Metric DeepSeek-V3 (Chat) (DeepSeek API) GPT-4o mini (OpenAI) Advantage
Standard Input / 1M Tokens $0.270 $0.150 GPT-4o mini
Cached Input / 1M Tokens $0.070 $0.075 DeepSeek-V3 (Chat)
Output Generation / 1M Tokens $1.10 $0.60 GPT-4o mini
Intelligence / Benchmark Quality 1282 LMSYS Elo 1224 LMSYS Elo DeepSeek-V3 (Chat)
Monthly Spend (5k req/day, 50% cache) $129.75 / mo $78.19 / mo GPT-4o mini (-39.7%)
Context Window 64,000 tokens 128,000 tokens GPT-4o mini
Output Speed (Throughput) 60 tokens/sec 140 tokens/sec GPT-4o mini
Batch API Discount -50% (DeepSeek API) -50% (OpenAI) DeepSeek API
Primary Workload Fit High-intelligence general tasks & translation where prompt caching saves 75%+ High-volume classification, extraction, RAG summarization, low-cost chatbots Workload Dependent
Deploy / Console Access Try DeepSeek-V3 (Chat) → Try GPT-4o mini → Open Full Simulator