DeepSeek V3.2 vs OpenAI o3
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
DeepSeek · Sep 2025
The sparse-attention release that halved DeepSeek's already-lowest-in-class prices while keeping GPT-class quality.
OpenAI · Apr 2025
OpenAI's dedicated 2025 reasoning model that pioneered thinking-with-images and agentic tool use within chain-of-thought.
The verdict
OpenAI o3 wins 3 of the 4 benchmarks these models share, against 1 for DeepSeek V3.2. On price the gap is dramatic: DeepSeek V3.2 works out roughly 11x cheaper per blended million tokens. OpenAI o3 also takes 200K of context versus 128K for DeepSeek V3.2. And DeepSeek V3.2 is open-weights (MIT), so it can be self-hosted — a structural advantage if data control or vendor independence matters.
Benchmark head-to-head 1–3
Specs & pricing
| DeepSeek V3.2 | OpenAI o3 | |
|---|---|---|
| modhub Index | 68.4 | 68.9 |
| Input price / 1M | $0.28 | $2 |
| Output price / 1M | $0.42 | $8 |
| Context window | 128K | 200K |
| Max output | 64K | 100K |
| Open weights | yes (MIT) | no |
| Reasoning model | yes | yes |
| Multimodal input | text | text, image |
| Knowledge cutoff | Jul 2025 | May 2024 |
| Released | Sep 2025 | Apr 2025 |
| Example monthly cost* | $3.43 | $32.00 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, DeepSeek V3.2 or OpenAI o3?
- OpenAI o3 wins 3 of the 4 benchmarks these models share, against 1 for DeepSeek V3.2. On price the gap is dramatic: DeepSeek V3.2 works out roughly 11x cheaper per blended million tokens. OpenAI o3 also takes 200K of context versus 128K for DeepSeek V3.2. And DeepSeek V3.2 is open-weights (MIT), so it can be self-hosted — a structural advantage if data control or vendor independence matters.
- Which is cheaper, DeepSeek V3.2 or OpenAI o3?
- DeepSeek V3.2 costs $0.28/$0.42 per million input/output tokens, while OpenAI o3 costs $2/$8. For a typical workload of 10M input and 1.5M output tokens per month, that's $3.43 versus $32.00.
- Which model is better for coding, DeepSeek V3.2 or OpenAI o3?
- On SWE-bench Verified — the standard agentic-coding benchmark — OpenAI o3 scores 69.1% versus 67.8% for DeepSeek V3.2, making OpenAI o3 the stronger pick for coding agents.