LLM Comparison
Grok 4.1 Fast vs Seed 1.6
Side-by-side specs, pricing & capabilities · Updated April 2026
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2/6 modelsSame tier:
S Seed 1.6 | ||
|---|---|---|
| Organization | ByteDance | |
| OpenTools Score | ||
| Family | Grok | Seed |
| Status | Current | Current |
| Release Date | Nov 2025 | Dec 2025 |
| Context Window | 2.0M tokens | 262K tokens |
| Input Price | $0.20/M tokens | $0.25/M tokens |
| Output Price | $0.50/M tokens | $2.00/M tokens |
| Pricing Notes | Cache read: $0.0500/M tokens | — |
| Capabilities | textvisioncode | textvisionvideocode |
| Max Output | 30K tokens | 33K tokens |
| API Identifier | x-ai/grok-4.1-fast | bytedance-seed/seed-1.6 |
| View Grok 4.1 Fast | View Seed 1.6 |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Grok 4.1 FastCheapest | $0.20 | $0.25 | $0.45 | — |
| Seed 1.6 | $0.25 | $1.00 | $1.25 | +178% |
xAI
Grok 4.1 Fast
Grok 4.1 Fast is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $0.20/M input tokens.
ByteDance
Seed 1.6
Seed 1.6 is a multimodal llm from ByteDance. Supports up to 262,144 token context window. Available from $0.25/M input tokens.
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