API cost decision in 10 seconds

Seed 1.6 vs Gemini 3 Flash Preview

Pick Seed 1.6 for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.

Pricing data updated: 2026-05-26T11:08:00Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Seed 1.6 for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Seed 1.6 is estimated at $1.25 vs $2 for Gemini 3 Flash Preview, saving $0.75 (37.5% lower).

Cost-first pickSeed 1.6

Context-first pickGemini 3 Flash Preview

Sample savings$0.7537.5%

10x traffic gap$7.5

Gemini 3 Flash Preview has more context, but Seed 1.6 saves $0.75 on the standard workload. At 10x that traffic, the same price gap is about $7.5. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Seed 1.6 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Seed 1.6	Gemini 3 Flash Preview
Input-heavy / RAG	5M input + 500K output	Seed 1.6	$2.25	$4
Balanced workload	1M input + 1M output	Seed 1.6	$2.25	$3.5
Output-heavy chatbot	1M input + 5M output	Seed 1.6	$10.25	$15.5

Cheaper input Seed 1.6 $0.25 vs $0.5 / 1M

Seed 1.6 is $0.25 cheaper per 1M input tokens (50% lower; 2x difference).

Cheaper output Seed 1.6 $2 vs $3 / 1M

Seed 1.6 is $1 cheaper per 1M output tokens (33.3% lower; 1.5x difference).

Larger context Gemini 3 Flash Preview 262.14K vs 1.05M

Gemini 3 Flash Preview has 786.43K more context (4x larger).

Sample workload Seed 1.6 $1.25 vs $2

Seed 1.6 is $0.75 cheaper on the standard workload (37.5% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Seed 1.6 Calculating… Estimated API cost

Gemini 3 Flash Preview 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 1.6 has the lower input price; Seed 1.6 has the lower output price; Gemini 3 Flash Preview offers the larger context window. For the 1M input plus 500K output sample, Seed 1.6 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 1.6 and $2 for Gemini 3 Flash Preview.

Best Fit

Choose Seed 1.6 when you care most about lower input-token price, and lower output-token price.

Choose Gemini 3 Flash Preview when you care most about larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Seed 1.6 is estimated at $1.25 vs $2 for Gemini 3 Flash Preview, saving $0.75 (37.5% lower).
Seed 1.6 is $0.75 cheaper on the standard workload (37.5% lower).
Seed 1.6 is $0.25 cheaper per 1M input tokens (50% lower; 2x difference).
Seed 1.6 is $1 cheaper per 1M output tokens (33.3% lower; 1.5x difference).
Gemini 3 Flash Preview has 786.43K more context (4x larger).

Head-to-Head Specs

Feature	Seed 1.6 (ByteDance Seed)	Gemini 3 Flash Preview (Google)
Input Price prompt tokens per 1M	$0.25	$0.5
Completion Price per 1M tokens	$2	$3
Sample Workload Cost 1M input + 500K output	$1.25	$2
Context Window	262.14K	1.05M
Release Date	2025-12-23	2025-12-17

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Seed 1.6	On the standard 1M input plus 500K output workload, Seed 1.6 is estimated at $1.25 vs $2 for Gemini 3 Flash Preview, saving $0.75 (37.5% lower).
High-volume input processing	Seed 1.6	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Seed 1.6	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Gemini 3 Flash Preview	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 1.6 when lower sample workload cost matters most: $0.22.
Seed-2.0-Mini can replace Seed 1.6 when lower sample workload cost matters most: $0.3.
Gemma 4 26B A4B (free) can replace Gemini 3 Flash Preview when lower sample workload cost matters most: $0.
Gemma 4 31B (free) can replace Gemini 3 Flash Preview when lower sample workload cost matters most: $0.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
Owl Alpha offers 1.05M context with $0 sample workload cost.

Popular competitors

No popular competitor is currently available.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

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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

Google catalog

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

Open Google models

Seed 1.6

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.

Gemini 3 Flash Preview

Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool...