What this model error usually means
ByteDance Seed: Seed 1.6 returning 403 / model permission denied means you should first confirm whether model ID bytedance-seed/seed-1.6 is visible for this ByteDance Seed key, then separate permission, context, capability, rate limit, or route issues.
- Model: bytedance-seed/seed-1.6
- Provider: ByteDance Seed
- Status code: 403