LFM2.5-1.2B-Instruct (free) is free for input tokens while Seed 1.6 Flash costs $0.07 per 1M tokens.
API cost decision in 10 seconds
LFM2.5-1.2B-Instruct (free) vs Seed 1.6 Flash
Pick LFM2.5-1.2B-Instruct (free) for lower cost; pick Seed 1.6 Flash only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick LFM2.5-1.2B-Instruct (free) for lower cost; pick Seed 1.6 Flash only if the larger context window matters more.
On the standard 1M input plus 500K output workload, LFM2.5-1.2B-Instruct (free) is estimated at $0 vs $0.22 for Seed 1.6 Flash, saving $0.22 (100% lower).
Cost-first pickLFM2.5-1.2B-Instruct (free)
Context-first pickSeed 1.6 Flash
Sample savings$0.22100%
10x traffic gap$2.25
Seed 1.6 Flash has more context, but LFM2.5-1.2B-Instruct (free) saves $0.22 on the standard workload. At 10x that traffic, the same price gap is about $2.25. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
LFM2.5-1.2B-Instruct (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | LFM2.5-1.2B-Instruct (free) | Seed 1.6 Flash |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | LFM2.5-1.2B-Instruct (free) | $0 | $0.53 |
| Balanced workload | 1M input + 1M output | LFM2.5-1.2B-Instruct (free) | $0 | $0.38 |
| Output-heavy chatbot | 1M input + 5M output | LFM2.5-1.2B-Instruct (free) | $0 | $1.57 |
LFM2.5-1.2B-Instruct (free) is free for output tokens while Seed 1.6 Flash costs $0.3 per 1M tokens.
Seed 1.6 Flash has 229.38K more context (8x larger).
LFM2.5-1.2B-Instruct (free) is free for the standard workload while the other model is estimated at $0.22.
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
LFM2.5-1.2B-Instruct (free) has the lower input price; LFM2.5-1.2B-Instruct (free) has the lower output price; Seed 1.6 Flash offers the larger context window. For the 1M input plus 500K output sample, LFM2.5-1.2B-Instruct (free) is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0 for LFM2.5-1.2B-Instruct (free) and $0.22 for Seed 1.6 Flash.
Choose LFM2.5-1.2B-Instruct (free) when you care most about lower input-token price, and lower output-token price.
Choose Seed 1.6 Flash when you care most about larger context window.
- On the standard 1M input plus 500K output workload, LFM2.5-1.2B-Instruct (free) is estimated at $0 vs $0.22 for Seed 1.6 Flash, saving $0.22 (100% lower).
- LFM2.5-1.2B-Instruct (free) is free for the standard workload while the other model is estimated at $0.22.
- LFM2.5-1.2B-Instruct (free) is free for input tokens while Seed 1.6 Flash costs $0.07 per 1M tokens.
- LFM2.5-1.2B-Instruct (free) is free for output tokens while Seed 1.6 Flash costs $0.3 per 1M tokens.
- Seed 1.6 Flash has 229.38K more context (8x larger).
| Feature | LFM2.5-1.2B-Instruct (free) (LiquidAI) | Seed 1.6 Flash (ByteDance Seed) |
|---|---|---|
| Input Price prompt tokens per 1M | $0 | $0.075 |
| Completion Price per 1M tokens | $0 | $0.3 |
| Sample Workload Cost 1M input + 500K output | $0 | $0.22 |
| Context Window | 32.77K | 262.14K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | LFM2.5-1.2B-Instruct (free) | On the standard 1M input plus 500K output workload, LFM2.5-1.2B-Instruct (free) is estimated at $0 vs $0.22 for Seed 1.6 Flash, saving $0.22 (100% lower). |
| High-volume input processing | LFM2.5-1.2B-Instruct (free) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | LFM2.5-1.2B-Instruct (free) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Seed 1.6 Flash | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- No lower-cost same-provider swap is currently tracked for this pair.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash offers 1.05M context with $0.2 sample workload cost.
- DeepSeek V4 Flash (free) offers 1.05M context with $0 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsLiquidAI catalog
Review all tracked LiquidAI models before deciding whether this matchup is the right shortlist.
Open LiquidAI modelsByteDance Seed catalog
Check other ByteDance Seed models with comparable pricing, context, or release timing.
Open ByteDance Seed modelsLFM2.5-1.2B-Instruct is a compact, high-performance instruction-tuned model built for fast on-device AI. It delivers strong chat quality in a 1.2B parameter footprint, with efficient edge inference and broad runtime support.
Seed 1.6 Flash is an ultra-fast multimodal deep thinking model by ByteDance Seed, supporting both text and visual understanding. It features a 256k context window and can generate outputs of...