Seed 1.6 Flash
Fast and lightVisionToolsByteDance Seed · Released December 2025
Seed 1.6 Flash is an ultra-fast multimodal deep thinking model by ByteDance Seed, supporting both text and visual understanding.
It belongs to ByteDance Seed's line, where Turbo servings lead on speed, Code targets software engineering, and the Lite and Mini sizes cover high-volume work.
Facts and pricing
- Provider
- ByteDance Seed
- Context window
- 262K tokens
- Input price
- 0.90 credits / 1M tokens ($0.075 raw)
- Output price
- 3.6 credits / 1M tokens ($0.30 raw)
- Vision (image input)
- Yes
- Tool calling
- Yes
- Extended reasoning
- No
Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.
Try Seed 1.6 Flash now
What Seed 1.6 Flash is best for
- High-volume everyday tasks where speed and cost matter: summaries, drafts, quick questions
- Long documents: the 262K-token window holds lengthy reports, contracts or papers whole
- Working with images: screenshots, charts, photos and scanned documents alongside text
- Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows
Example prompts
Prompts that suit a fast and light model like Seed 1.6 Flash:
- Summarize this article in five bullet points
- Rewrite this email to be shorter and friendlier
- Give me ten name ideas for a hiking newsletter
- Translate this paragraph to Spanish and keep the tone
ByteDance Seed family
| Model | Context | Input cr/M | Output cr/M | Released |
|---|---|---|---|---|
| Seed 2.1 Turbo | 262K | 6.0 | 30.0 | August 2026 |
| Seed-2.0-Code | 262K | 6.0 | 36.0 | August 2026 |
| Seed-2.0-Lite | 262K | 3.0 | 24.0 | March 2026 |
| Seed-2.0-Mini | 262K | 1.2 | 4.8 | February 2026 |
| Seed 1.6 Flash | 262K | 0.90 | 3.6 | December 2025 |
| Seed 1.6 | 262K | 3.0 | 24.0 | December 2025 |
Model comparisons
- Claude Opus 5.5 vs Claude Opus 5
- Claude Opus 5.5 vs GPT-6 Astra
- Claude Opus 5.5 vs GPT-6 Sol
- Claude Opus 5.5 vs Claude Sonnet 5
Frequently asked questions
- What is Seed 1.6 Flash?
- Seed 1.6 Flash is an AI model by ByteDance Seed. Seed 1.6 Flash is an ultra-fast multimodal deep thinking model by ByteDance Seed, supporting both text and visual understanding.
- How much does Seed 1.6 Flash cost on Zeplik?
- Input tokens cost 0.90 credits per million and output tokens 3.6 credits per million (1 credit = $0.10; the raw provider rates are $0.075 and $0.30 per million). New accounts start with free credits.
- How long can a conversation with Seed 1.6 Flash be?
- Seed 1.6 Flash has a 262K-token context window (262,144 tokens), which covers the conversation plus any documents you attach.
- Does Seed 1.6 Flash support images and tools?
- Seed 1.6 Flash accepts image input and supports tool calling.
Related models
Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows.
Seed 2.0 Code is a model from ByteDance Seed optimized for agentic coding.
Seed-2.0-mini targets latency-sensitive, high-concurrency, and cost-sensitive scenarios, emphasizing fast response and flexible inference deployment.
Seed 1.6 is a general-purpose model released by the ByteDance Seed team. It incorporates multimodal capabilities and adaptive deep thinking with a 256K context window.
Ripple-65B-Preview by ricursiveAI, a 65B model with native tool calling, served in BF16.
More you can do with Seed 1.6 Flash
- 468 AI skillsReady-to-run expert methods for writing, data, code and more, each running on Seed 1.6 Flash or any model you pick.
- 997 integrationsConnect Gmail, Slack, GitHub, Notion and hundreds more so the assistant can work in your apps.
- Simple pricingPlus, Pro and Max plans with a monthly credit allowance that works across every model.