token.app › Compare › DeepSeek V4 Pro vs GPT-5.6 Terra
DeepSeek V4 Pro vs GPT-5.6 Terra
GPT-5.6 Terra leads on 4 of 5 shared benchmarks. DeepSeek V4 Pro is 4.1× cheaper per token on a blended 3:1 basis. GPT-5.6 Terra accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| DeepSeek V4 Pro | GPT-5.6 Terra | |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Input $/1M | $0.435 | $1.00 |
| Output $/1M | $0.870 | $6.00 |
| Blended $/1M | $0.544 | $2.25 |
| Context window | 1.0M | 1.1M |
| Max output | 384K | 128K |
| Released | Apr 2026 | Jul 2026 |
| Licence | Open weights | Proprietary |
| GPQA Diamond | 90.9% | 93.3% |
| FrontierMath T1–3 | 45.3% | 86.0% |
| FrontierMath T4 | 2.4% | 70.7% |
| SimpleQA Verified | 57.0% | 43.1% |
| OTIS Mock AIME | 96.7% | 99.7% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose DeepSeek V4 Pro if…
- Costs less per token — $0.544 vs $2.25 blended
- Higher SimpleQA Verified (57.0% vs 43.1%)
- Open weights — self-hostable
Choose GPT-5.6 Terra if…
- Higher GPQA Diamond (93.3% vs 90.9%)
- Higher FrontierMath T1–3 (86.0% vs 45.3%)
- Higher FrontierMath T4 (70.7% vs 2.4%)
- Higher OTIS Mock AIME (99.7% vs 96.7%)
- Larger context window (1.1M)
- Newer model (released Jul 2026)
FAQ
Which is better, DeepSeek V4 Pro or GPT-5.6 Terra?
Across the 5 benchmarks both models have independently-run scores for, DeepSeek V4 Pro leads on 1 and GPT-5.6 Terra leads on 4. Benchmarks are one input — price and context window are on this page too.
Is DeepSeek V4 Pro cheaper than GPT-5.6 Terra?
DeepSeek V4 Pro is cheaper: $0.544 versus $2.25 per million tokens blended at 3:1 input:output. Input alone: $0.435 vs $1.00. Output alone: $0.870 vs $6.00.
What context windows do DeepSeek V4 Pro and GPT-5.6 Terra have?
DeepSeek V4 Pro: 1,048,576 tokens. GPT-5.6 Terra: 1,050,000 tokens.
Who makes DeepSeek V4 Pro and GPT-5.6 Terra?
DeepSeek V4 Pro is made by DeepSeek. GPT-5.6 Terra is made by OpenAI.