gpt-oss-120b vs DeepSeek-V4-Flash
Specs, VRAM requirements and download trends — updated 10 November 2026.
openai · A · Open weights
Params
120.4 B
Context
131,072
30d
2.4 M
apache-2.0 · commercial OK
deepseek-ai · B · Open weights
Params
158.1 B
Context
1,048,576
30d
1.2 M
mit · commercial OK
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | gpt-oss-120b | DeepSeek-V4-Flash |
|---|---|---|
| Deployment | Open weights · also via API | Open weights · also via API |
| Parameters | 120.4 B | 158.1 B |
| Architecture | GptOssForCausalLM | DeepseekV4ForCausalLM |
| Context length | 131,072 | 1,048,576 |
| Licence | apache-2.0 | mit |
| Commercial use | Allowed | Allowed |
| Languages | — | — |
| Downloads 30d | 2,417,644 | 1,151,336 |
| Downloads all time | 62.0 M | 13.7 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2025-08-04 | 2026-04-22 |
| API input price / 1M tokens | $0.15 | $0.091 |
| API output price / 1M tokens | $0.60 | $0.18 |
| Est. cost per 1M input + 1M output tokens | $0.75 | $0.27 |
| Cached input / 1M tokens | $0.075 | $0.018 |
| AA Intelligence Index | 3.8 | — |
| AA Coding Index | 30.4 | 56.2 |
| AA Agentic Index | 3.7 | 22.2 |
| Max output tokens | 65,536 | 943,717 |
| API providers | 22 | 13 |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
gpt-oss-120b
$0.75
DeepSeek-V4-Flash
$0.27
DeepSeek-V4-Flash is 2.7× cheaper at list price.
Download trend
Daily snapshots, last 90 days (13 Aug – 10 Nov)
5.5 M799 K
gpt-oss-120b
DeepSeek-V4-Flash
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
gpt-oss-120b · fp16 @ 128K ctx
433.0 GB / 24 GB
DeepSeek-V4-Flash · fp16 @ 1024K ctx
3,211.0 GB / 24 GB