Updated March 26, 2026· Based on independent benchmark data
GPT-5.3 Codex (xhigh) leads in intelligence with a score of 54.0 vs 25.2. Seed-OSS-36B-Instruct is 8.3x cheaper at $0.21/1M tokens vs $1.75/1M. For speed, GPT-5.3 Codex (xhigh) wins at 72 tok/s vs 42 tok/s.
| Metric | Seed-OSS-36B-Instruct | GPT-5.3 Codex (xhigh) |
|---|---|---|
| Intelligence Score | 25.2 | 54.0 |
| Coding Score | 16.7 | 53.1 |
| Math Score | 84.7 | N/A |
| Speed (tok/s) | 42 tok/s | 72 tok/s |
| Latency (TTFT) | 1.87s | 83.91s |
| Input Price / 1M tokens | $0.21 | $1.75 |
| Output Price / 1M tokens | $0.57 | $14 |
| Context Window | N/A |
GPT-5.3 Codex (xhigh) outperforms Seed-OSS-36B-Instruct on the intelligence index with a score of 54.0 compared to 25.2. For coding tasks, GPT-5.3 Codex (xhigh) has the edge with a coding score of 53.1 vs 16.7.
GPT-5.3 Codex (xhigh) generates output significantly faster at 72 tok/s compared to Seed-OSS-36B-Instruct's 42 tok/s, making it 1.7x faster for streaming responses. Time to first token is 1.87s for Seed-OSS-36B-Instruct vs 83.91s for GPT-5.3 Codex (xhigh), which affects perceived responsiveness in interactive applications.
Seed-OSS-36B-Instruct is more affordable at $0.21/1M input tokens ($0.57/1M output), while GPT-5.3 Codex (xhigh) costs $1.75/1M input ($14/1M output). That makes GPT-5.3 Codex (xhigh) 8.3x more expensive per token, which can add up significantly at scale. For a typical workload of 100 requests per day at 2,000 tokens each, Seed-OSS-36B-Instruct would cost approximately $1.26/month vs $10.50/month for GPT-5.3 Codex (xhigh) in input costs alone.
Choose Seed-OSS-36B-Instruct when you need lower cost. Choose GPT-5.3 Codex (xhigh) when you need higher intelligence (54.0), stronger coding performance (53.1), faster output (72 tok/s).
GPT-5.3 Codex (xhigh) scores higher on coding benchmarks (53.1 vs 16.7), making it the better choice for programming tasks.
Seed-OSS-36B-Instruct is cheaper at $0.21/1M input tokens vs $1.75/1M for GPT-5.3 Codex (xhigh).
GPT-5.3 Codex (xhigh) is faster, producing output at 72 tok/s compared to Seed-OSS-36B-Instruct's 42 tok/s.
No, Seed-OSS-36B-Instruct does not support image input. Neither model supports image input.
Data last synced: March 26, 2026
| N/A |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Text |
| Output Modalities | Text | Text |
| Free Tier | No | No |
It depends on your priorities. GPT-5.3 Codex (xhigh) scores higher on intelligence (54.0), but Seed-OSS-36B-Instruct may be better for specific use cases like budget-conscious projects or speed-critical applications.