API cost decision in 10 seconds

Seed-2.0-Lite vs Mercury 2

Pick Mercury 2 for lower cost; pick Seed-2.0-Lite 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 Mercury 2 for lower cost; pick Seed-2.0-Lite only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Mercury 2 is estimated at $0.62 vs $1.25 for Seed-2.0-Lite, saving $0.62 (50% lower).

Cost-first pickMercury 2

Context-first pickSeed-2.0-Lite

Sample savings$0.6250%

10x traffic gap$6.25

Seed-2.0-Lite has more context, but Mercury 2 saves $0.62 on the standard workload. At 10x that traffic, the same price gap is about $6.25. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Mercury 2 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Seed-2.0-Lite	Mercury 2
Input-heavy / RAG	5M input + 500K output	Mercury 2	$2.25	$1.62
Balanced workload	1M input + 1M output	Mercury 2	$2.25	$1
Output-heavy chatbot	1M input + 5M output	Mercury 2	$10.25	$4

Cheaper input Tie $0.25 vs $0.25 / 1M

Both models report the same input price at $0.25 per 1M tokens.

Cheaper output Mercury 2 $2 vs $0.75 / 1M

Mercury 2 is $1.25 cheaper per 1M output tokens (62.5% lower; 2.67x difference).

Larger context Seed-2.0-Lite 262.14K vs 128K

Seed-2.0-Lite has 134.14K more context (2.05x larger).

Sample workload Mercury 2 $1.25 vs $0.62

Mercury 2 is $0.62 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

Seed-2.0-Lite Calculating… Estimated API cost

Mercury 2 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

both models tie on input price; Mercury 2 has the lower output price; Seed-2.0-Lite offers the larger context window. For the 1M input plus 500K output sample, Mercury 2 is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $1.25 for Seed-2.0-Lite and $0.62 for Mercury 2.

Best Fit

Choose Seed-2.0-Lite when you care most about larger context window.

Choose Mercury 2 when you care most about lower output-token price.

Decision Notes

On the standard 1M input plus 500K output workload, Mercury 2 is estimated at $0.62 vs $1.25 for Seed-2.0-Lite, saving $0.62 (50% lower).
Mercury 2 is $0.62 cheaper on the standard workload (50% lower).
Both models report the same input price at $0.25 per 1M tokens.
Mercury 2 is $1.25 cheaper per 1M output tokens (62.5% lower; 2.67x difference).
Seed-2.0-Lite has 134.14K more context (2.05x larger).

Head-to-Head Specs

Feature	Seed-2.0-Lite (ByteDance Seed)	Mercury 2 (Inception)
Input Price prompt tokens per 1M	$0.25	$0.25
Completion Price per 1M tokens	$2	$0.75
Sample Workload Cost 1M input + 500K output	$1.25	$0.62
Context Window	262.14K	128K
Release Date	2026-03-10	2026-03-04

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Mercury 2	On the standard 1M input plus 500K output workload, Mercury 2 is estimated at $0.62 vs $1.25 for Seed-2.0-Lite, saving $0.62 (50% lower).
High-volume input processing	Tie	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Mercury 2	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Seed-2.0-Lite	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

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.
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 Pro offers 1.05M context with $0.87 sample workload cost.

Popular competitors

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Hy3 preview · Tencent · #2
Claude Opus 4.7 · Anthropic · #3
Claude Sonnet 4.6 · Anthropic · #4

Cheaper alternatives

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Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

Open provider hubs

ByteDance Seed catalog

Review all tracked ByteDance Seed models before deciding whether this matchup is the right shortlist.

Open ByteDance Seed models

Inception catalog

Check other Inception models with comparable pricing, context, or release timing.

Open Inception models

Seed-2.0-Lite

Seed-2.0-Lite is a versatile, cost‑efficient enterprise workhorse that delivers strong multimodal and agent capabilities while offering noticeably lower latency, making it a practical default choice for most production workloads across...

Mercury 2

Mercury 2 is an extremely fast reasoning LLM, and the first reasoning diffusion LLM (dLLM). Instead of generating tokens sequentially, Mercury 2 produces and refines multiple tokens in parallel, achieving...