$ diff deepseek-v4 gpt-5-6-sol
DeepSeek V4 vs GPT-5.6 Sol
DeepSeek and OpenAI, side by side. Every value below is the one recorded on the model’s own wiki page, with its citation — nothing is estimated.
DeepSeekDeepSeek V4
- context
- 1M
- weights
- open
- $/M in
- —
- $/M out
- —
- context
- 1.1M
- weights
- closed
- $/M in
- $5
- $/M out
- $30
What actually differs
- Context window
- GPT-5.6 Sol takes 1.1M against 1M — modestly more room in a single request.
- Weights
- DeepSeek V4 publishes weights (MIT (open-weight)); GPT-5.6 Sol is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- DeepSeek V4 shipped 7 days after GPT-5.6 Sol (2026-07-16 vs 2026-07-09).
Full spec
| Attribute | DeepSeek V4 | GPT-5.6 Sol |
|---|---|---|
| Developer | DeepSeek | OpenAI |
| Released | 2026-07-16 | 2026-07-09 |
| Context window | 1M tokens (384K max output) | 1.05M tokens |
| Pricing | Peak: 2× off-peak API rates; off-peak rates not disclosed | $5/M input · $30/M output (Sol; family tiers below) |
| License | MIT (open-weight) | proprietary (API-only; no weight release) |
| Availability | DeepSeek API, Hugging Face (deepseek-ai/DeepSeek-V4-Pro) | ChatGPT (subscription), API |
Values come from DeepSeek V4 and GPT-5.6 Sol, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing. How these pages are produced.