DeepSeek V4 Pro vs GPT-6 Luna
Pick two to four models to compare benchmark scores, prices, context windows and speed. The link updates as you pick, so you can share the exact comparison.
Cheapest blended
GPT-6 Luna
$0.20 / 1M tokens
Largest context
GPT-6 Luna
1.05M tokens
Fastest output
GPT-6 Luna
131 tokens/s
Top on DeepSWE v1.1
GPT-6 Luna
66.6%
Specifications
| Spec | DeepSeek V4 ProDeepSeek | GPT-6 LunaOpenAI |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Released | 24 Apr 2026 | 22 Sep 2026 |
| Licence | Open weight | Proprietary |
| Context window | 1.05M tokens | 1.05M tokens |
| Max output | 393K tokens | 128K tokens |
| Input / 1M | $1.32* | $0.10* |
| Output / 1M | $3.96 | $0.50 |
| Cached input / 1M | $0.044 | $0.01 |
| Speed | 104 tokens/s | 131 tokens/s |
| Input types | text | text, image |
| Best for | CodingAgentsReasoningLong context | BudgetAgents |
* DeepSeek V4 Pro: Peak price shown. Off-peak is half: $0.66 in, $1.98 out, $0.022 cache hit. Peak hours are 01:00-04:00 and 06:00-10:00 UTC Monday to Friday, excluding Chinese public holidays; weekends are off-peak all day. This peak/off-peak pricing started 16 Aug 2026 16:00 UTC and replaced the flat $0.435/$0.87 price that DeepSeek made permanent on 22 May 2026 (launch list price was $1.74/$3.48).
* GPT-6 Luna: Batch and Flex: $0.05 / $0.25. Fast mode: $0.20 / $1.00. Cache writes 1.25x input; 30-minute minimum cache life. Data residency +10%. Launched at 50% below GPT-5.6 Luna's price.
Benchmark scores
Officially reported scores only. A model with no published score on a benchmark shows a line, not a zero.
Price per 1M tokens
Context window and speed
Notes
- DeepSeek V4 Pro
- DeepSeek's flagship MoE model, 1.6T total and 49B active parameters, open weights under MIT (commercial use allowed, no extra conditions). The API now serves the GA build DeepSeek-V4-Pro-0813 (13 Aug 2026), which DeepSeek says greatly improves agent performance and adds low/high/max reasoning effort.
- GPT-6 Luna
- OpenAI's most efficient model, for focused, high-volume tasks.
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