LFM2.5-1.2B-Thinking (free) is free for input tokens while Grok 4.20 Multi-Agent costs $2 per 1M tokens.
API cost decision in 10 seconds
Grok 4.20 Multi-Agent vs LFM2.5-1.2B-Thinking (free)
Pick LFM2.5-1.2B-Thinking (free) for lower cost; pick Grok 4.20 Multi-Agent only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick LFM2.5-1.2B-Thinking (free) for lower cost; pick Grok 4.20 Multi-Agent only if the larger context window matters more.
On the standard 1M input plus 500K output workload, LFM2.5-1.2B-Thinking (free) is estimated at $0 vs $5 for Grok 4.20 Multi-Agent, saving $5 (100% lower).
Cost-first pickLFM2.5-1.2B-Thinking (free)
Context-first pickGrok 4.20 Multi-Agent
Sample savings$5100%
10x traffic gap$50
Grok 4.20 Multi-Agent has more context, but LFM2.5-1.2B-Thinking (free) saves $5 on the standard workload. At 10x that traffic, the same price gap is about $50. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
LFM2.5-1.2B-Thinking (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Grok 4.20 Multi-Agent | LFM2.5-1.2B-Thinking (free) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | LFM2.5-1.2B-Thinking (free) | $13 | $0 |
| Balanced workload | 1M input + 1M output | LFM2.5-1.2B-Thinking (free) | $8 | $0 |
| Output-heavy chatbot | 1M input + 5M output | LFM2.5-1.2B-Thinking (free) | $32 | $0 |
LFM2.5-1.2B-Thinking (free) is free for output tokens while Grok 4.20 Multi-Agent costs $6 per 1M tokens.
Grok 4.20 Multi-Agent has 1.97M more context (61x larger).
LFM2.5-1.2B-Thinking (free) is free for the standard workload while the other model is estimated at $5.
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-Thinking (free) has the lower input price; LFM2.5-1.2B-Thinking (free) has the lower output price; Grok 4.20 Multi-Agent offers the larger context window. For the 1M input plus 500K output sample, LFM2.5-1.2B-Thinking (free) is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $5 for Grok 4.20 Multi-Agent and $0 for LFM2.5-1.2B-Thinking (free).
Choose Grok 4.20 Multi-Agent when you care most about larger context window.
Choose LFM2.5-1.2B-Thinking (free) when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, LFM2.5-1.2B-Thinking (free) is estimated at $0 vs $5 for Grok 4.20 Multi-Agent, saving $5 (100% lower).
- LFM2.5-1.2B-Thinking (free) is free for the standard workload while the other model is estimated at $5.
- LFM2.5-1.2B-Thinking (free) is free for input tokens while Grok 4.20 Multi-Agent costs $2 per 1M tokens.
- LFM2.5-1.2B-Thinking (free) is free for output tokens while Grok 4.20 Multi-Agent costs $6 per 1M tokens.
- Grok 4.20 Multi-Agent has 1.97M more context (61x larger).
| Feature | Grok 4.20 Multi-Agent (xAI) | LFM2.5-1.2B-Thinking (free) (LiquidAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $0 |
| Completion Price per 1M tokens | $6 | $0 |
| Sample Workload Cost 1M input + 500K output | $5 | $0 |
| Context Window | 2M | 32.77K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | LFM2.5-1.2B-Thinking (free) | On the standard 1M input plus 500K output workload, LFM2.5-1.2B-Thinking (free) is estimated at $0 vs $5 for Grok 4.20 Multi-Agent, saving $5 (100% lower). |
| High-volume input processing | LFM2.5-1.2B-Thinking (free) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | LFM2.5-1.2B-Thinking (free) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Grok 4.20 Multi-Agent | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Grok Build 0.1 can replace Grok 4.20 Multi-Agent when lower sample workload cost matters most: $2.
- Grok 4.3 can replace Grok 4.20 Multi-Agent when lower sample workload cost matters most: $2.5.
- Grok 4.20 can replace Grok 4.20 Multi-Agent when lower sample workload cost matters most: $2.5.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
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- Hy3 preview · Tencent · #2
- Claude Opus 4.7 · Anthropic · #3
- Claude Sonnet 4.6 · Anthropic · #4
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