API cost decision in 10 seconds

Grok 4.20 vs Seed-2.0-Lite

Pick Seed-2.0-Lite for lower cost; pick Grok 4.20 only if the larger context window matters more.

Page updated: 2026-05-26T10:03:26Z Data confirmed: 2026-05-26T12:43:06Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Seed-2.0-Lite for lower cost; pick Grok 4.20 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Seed-2.0-Lite is estimated at $1.25 vs $2.5 for Grok 4.20, saving $1.25 (50% lower).

Cost-first pickSeed-2.0-Lite

Context-first pickGrok 4.20

Sample savings$1.2550%

10x traffic gap$12.5

Grok 4.20 has more context, but Seed-2.0-Lite saves $1.25 on the standard workload. At 10x that traffic, the same price gap is about $12.5. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Seed-2.0-Lite stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Grok 4.20	Seed-2.0-Lite
Input-heavy / RAG	5M input + 500K output	Seed-2.0-Lite	$7.5	$2.25
Balanced workload	1M input + 1M output	Seed-2.0-Lite	$3.75	$2.25
Output-heavy chatbot	1M input + 5M output	Seed-2.0-Lite	$13.75	$10.25

Cheaper input Seed-2.0-Lite $1.25 vs $0.25 / 1M

Seed-2.0-Lite is $1 cheaper per 1M input tokens (80% lower; 5x difference).

Cheaper output Seed-2.0-Lite $2.5 vs $2 / 1M

Seed-2.0-Lite is $0.5 cheaper per 1M output tokens (20% lower; 1.25x difference).

Larger context Grok 4.20 2M vs 262.14K

Grok 4.20 has 1.74M more context (7.63x larger).

Sample workload Seed-2.0-Lite $2.5 vs $1.25

Seed-2.0-Lite is $1.25 cheaper on the standard workload (50% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Grok 4.20 Calculating… Estimated API cost

Seed-2.0-Lite Calculating… Estimated API cost

Cheaper for this workload Calculating… Difference: calculating…

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

Verdict

Seed-2.0-Lite has the lower input price; Seed-2.0-Lite has the lower output price; Grok 4.20 offers the larger context window. For the 1M input plus 500K output sample, Seed-2.0-Lite is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $2.5 for Grok 4.20 and $1.25 for Seed-2.0-Lite.

Best Fit

Choose Grok 4.20 when you care most about larger context window.

Choose Seed-2.0-Lite when you care most about lower input-token price, and lower output-token price.

Decision Notes

On the standard 1M input plus 500K output workload, Seed-2.0-Lite is estimated at $1.25 vs $2.5 for Grok 4.20, saving $1.25 (50% lower).
Seed-2.0-Lite is $1.25 cheaper on the standard workload (50% lower).
Seed-2.0-Lite is $1 cheaper per 1M input tokens (80% lower; 5x difference).
Seed-2.0-Lite is $0.5 cheaper per 1M output tokens (20% lower; 1.25x difference).
Grok 4.20 has 1.74M more context (7.63x larger).

Head-to-Head Specs

Feature	Grok 4.20 (xAI)	Seed-2.0-Lite (ByteDance Seed)
Input Price prompt tokens per 1M	$1.25	$0.25
Completion Price per 1M tokens	$2.5	$2
Sample Workload Cost 1M input + 500K output	$2.5	$1.25
Context Window	2M	262.14K
Release Date	2026-03-31	2026-03-10

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Seed-2.0-Lite	On the standard 1M input plus 500K output workload, Seed-2.0-Lite is estimated at $1.25 vs $2.5 for Grok 4.20, saving $1.25 (50% lower).
High-volume input processing	Seed-2.0-Lite	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Seed-2.0-Lite	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Grok 4.20	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Grok Build 0.1 can replace Grok 4.20 when lower sample workload cost matters most: $2.
Seed 1.6 Flash can replace Seed-2.0-Lite when lower sample workload cost matters most: $0.22.
Seed-2.0-Mini can replace Seed-2.0-Lite when lower sample workload cost matters most: $0.3.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.

Popular competitors

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Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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xAI catalog

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ByteDance Seed catalog

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