DeepSeek V4 vs gpt-oss-120b
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
DeepSeek V4
DeepSeek · Mar 2026
The open-weights shock of 2026: ~81% SWE-bench Verified, a 1M context and MIT license at $0.30/$0.50 per million tokens.
gpt-oss-120b
OpenAI · Aug 2025
OpenAI's open-weights MoE reasoning model under Apache 2.0 — near o4-mini quality, runnable on a single 80GB GPU.
The verdict
These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. gpt-oss-120b is about 1.7x cheaper per blended million tokens (3:1 input:output mix). DeepSeek V4 also takes 1M of context versus 131K for gpt-oss-120b.
Specs & pricing
| DeepSeek V4 | gpt-oss-120b | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $0.3 | $0.1 |
| Output price / 1M | $0.5 | $0.5 |
| Context window | 1M | 131K |
| Max output | 64K | 131K |
| Open weights | yes (MIT) | yes (Apache 2.0) |
| Reasoning model | yes | yes |
| Multimodal input | text | text |
| Knowledge cutoff | Dec 2025 | Jun 2024 |
| Released | Mar 2026 | Aug 2025 |
| Example monthly cost* | $3.75 | $1.75 |
* 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 V4 or gpt-oss-120b?
- These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. gpt-oss-120b is about 1.7x cheaper per blended million tokens (3:1 input:output mix). DeepSeek V4 also takes 1M of context versus 131K for gpt-oss-120b.
- Which is cheaper, DeepSeek V4 or gpt-oss-120b?
- DeepSeek V4 costs $0.3/$0.5 per million input/output tokens, while gpt-oss-120b costs $0.1/$0.5. For a typical workload of 10M input and 1.5M output tokens per month, that's $3.75 versus $1.75.
- Which model is better for coding, DeepSeek V4 or gpt-oss-120b?
- We don't yet track SWE-bench Verified results for both models; check their individual pages for coding-related scores.