Seed 1.8
Seed 1.8 is ByteDance's language model with a 256K context window and up to 64K output tokens, starting at $0.250 / 1M input and $2.00 / 1M output. A multimodal LLM optimized for agent scenarios with enhanced agent capabilities, upgraded multimodal comprehension, and flexible context management.
Capabilities
Input1/5
Text·
Image✓
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities2/13
Reasoning✓
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
| Provider | Standard | ||
|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | |
 Vercel AI Gateway | $0.250 | $2.00 | $0.050 |
Cost Calculator
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Seed 2 Lite | 262K | $0.250 | $2.00 | Available | |
| Seed 2 Mini | 262K | $0.100 | $0.400 | Available | |
| Seed 2 Code | — | — | — | — | Available |
| Seed 2 Pro | — | — | — | — | Available |
| Seed-TTS 2.0 | — | — | — | — | Available |
| Seed 1.6 | 262K | $0.250 | $2.00 | Available | |
| Seed 1.6 Flash | 262K | $0.075 | $0.300 | Available | |
| Seed 1.8 | 256K | $0.250 | $2.00 | Current |