Seed-OSS vs ERNIE 4.5
A source-verified deployment comparison of Seed-OSS vs ERNIE 4.5.
Values without a defensible common measurement basis are shown as not directly comparable.
Source-verified deployment comparison. The comparison separates architecture, resident weights, active parameters, context, license, checkpoint precision, runtime support and compatible hardware. It does not manufacture a universal winner.
| Field | Seed-OSS 36B Instruct | ERNIE 4.5 21B-A3B |
|---|---|---|
| Provider / family | Seed-OSS | ERNIE |
| Track | General | General |
| Generation | Seed-OSS 36B | ERNIE 4.5 |
| Release date | 2025-08-20 | 2025-06-28 |
| Architecture | SeedOssForCausalLM | Ernie4_5_MoeForCausalLM |
| Dense / MoE | Dense model | MoE |
| Total parameters | 36.0B | 21.0B |
| Active parameters | N/A / Not directly comparable | 3.0B |
| Modalities | Text | Text |
| Context window | 524,288 | 131,072 |
| License | apache-2.0 | apache-2.0 |
| Commercial classification | Commercial Use Allowed: The official license permits commercial use; its obligations still apply. | Commercial Use Allowed: The official license permits commercial use; its obligations still apply. |
| Checkpoint formats | safetensors | safetensors |
| Public quantizations | BF16 | BF16 |
| Self-hosting status | Deployable with certified configuration | Deployable with certified configuration |
Overview
Source-verified facts: Seed-OSS 36B Instruct: ByteDance Seed / Seed-OSS / General / Seed-OSS 36B / 2025-08-20 · ERNIE 4.5 21B-A3B: Baidu / ERNIE / General / ERNIE 4.5 / 2025-06-28
Architecture differences
Source-verified facts: Seed-OSS 36B Instruct: SeedOssForCausalLM · ERNIE 4.5 21B-A3B: Ernie4_5_MoeForCausalLM
Parameters and active parameters
Source-verified facts: Seed-OSS 36B Instruct: 36B · Dense model · ERNIE 4.5 21B-A3B: Total parameters: 21B / Active parameters: 3B MoE
Context window
Source-verified facts: Seed-OSS 36B Instruct: 524,288 tokens · ERNIE 4.5 21B-A3B: 131,072 tokens
Modalities
Source-verified facts: Seed-OSS 36B Instruct: Text · ERNIE 4.5 21B-A3B: Text
Runtime ecosystem
Source-verified facts: Seed-OSS 36B Instruct: transformers, vllm · ERNIE 4.5 21B-A3B: fastdeploy
Quantization options
Source-verified facts: Seed-OSS 36B Instruct: BF16 · ERNIE 4.5 21B-A3B: BF16
VRAM and memory requirements
Source-verified facts: Seed-OSS 36B Instruct: BF16 ~72.0 GB estimated weight memory · ERNIE 4.5 21B-A3B: BF16 ~42.0 GB estimated weight memory
Recommended GPU configurations
GPU sizing must use the exact checkpoint and precision. The release pages provide memory estimates and inventory-backed recommendations; technical compatibility is kept separate from rental availability.
Multi-GPU considerations
Large variants may require tensor parallelism or multiple nodes. Validate total resident weights, runtime support, interconnect, topology and headroom before choosing a GPU count.
License and commercial use
Source-verified facts: Seed-OSS 36B Instruct: apache-2.0 / Commercial Use Allowed / The official license permits commercial use; its obligations still apply. · ERNIE 4.5 21B-A3B: apache-2.0 / Commercial Use Allowed / The official license permits commercial use; its obligations still apply.
Coding, reasoning and relevant capabilities
Source-verified facts: Seed-OSS 36B Instruct: Language / reasoning, Dense, Text · ERNIE 4.5 21B-A3B: Language / reasoning, MoE, Text
Deployment complexity
Source-verified facts: Seed-OSS 36B Instruct: 1 checkpoints / 2 runtimes / 1 precisions · ERNIE 4.5 21B-A3B: 1 checkpoints / 1 runtimes / 1 precisions
Which workloads fit each model
Source-verified facts: Seed-OSS 36B Instruct: Language / reasoning, General, Dense · ERNIE 4.5 21B-A3B: Language / reasoning, General, MoE
Key trade-offs
Select by workload, verified runtime, precision, memory, license and operational constraints. This comparison does not assign a universal winner.
Official sources
How should these models be compared?
Select by workload, license, runtime support, memory requirement and deployment constraints.
Last verified: 2026-08-25