The definitive 2026 comparison. Benchmarks, pricing, speed, and real-world results.
| Benchmark | DeepSeek V4 | GPT-4o | Winner |
|---|---|---|---|
| MMLU (knowledge) | 87.1% | 88.7% | GPT-4o (marginal) |
| HumanEval (coding) | 90.2% | 87.1% | DeepSeek V4 |
| MATH (math reasoning) | 79.8% | 76.6% | DeepSeek V4 |
| GSM8K (math word problems) | 93.5% | 92.1% | DeepSeek V4 |
| ARC-AGI (abstract reasoning) | 42.3% | 45.8% | GPT-4o |
| MT-Bench (conversation) | 9.12 | 9.28 | GPT-4o (marginal) |
| Chinese Language (CEVAL) | 92.4% | 78.2% | DeepSeek V4 (by far) |
| Metric | DeepSeek V4 (via TokenEase) | GPT-4o | Savings |
|---|---|---|---|
| Input tokens | $0.50/M | $2.50/M | 80% cheaper |
| Output tokens | $2.00/M | $10.00/M | 80% cheaper |
| 10M tokens/month | $12.50 | $42.50 | $30/mo saved |
| 100M tokens/month | $125 | $425 | $300/mo saved |
| Context window | 128K | 128K | Tie |
Based on real-world testing through TokenEase gateway:
DeepSeek V4:
GPT-4o:
Pro tip: Many teams use both — GPT-4o for critical tasks, DeepSeek V4 for everything else. TokenEase makes it easy to use multiple models through one API key.