API cost decision in 10 seconds

GPT-5.2-Codex vs Seed 1.6 Flash

Pick Seed 1.6 Flash for lower cost; pick GPT-5.2-Codex 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 Seed 1.6 Flash for lower cost; pick GPT-5.2-Codex only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Seed 1.6 Flash is estimated at $0.22 vs $8.75 for GPT-5.2-Codex, saving $8.53 (97.4% lower).

Cost-first pickSeed 1.6 Flash
Context-first pickGPT-5.2-Codex
Sample savings$8.5397.4%
10x traffic gap$85.25

GPT-5.2-Codex has more context, but Seed 1.6 Flash saves $8.53 on the standard workload. At 10x that traffic, the same price gap is about $85.25. 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 Flash stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGPT-5.2-CodexSeed 1.6 Flash
Input-heavy / RAG5M input + 500K outputSeed 1.6 Flash$15.75$0.53
Balanced workload1M input + 1M outputSeed 1.6 Flash$15.75$0.38
Output-heavy chatbot1M input + 5M outputSeed 1.6 Flash$71.75$1.57
Cheaper input Seed 1.6 Flash $1.75 vs $0.075 / 1M

Seed 1.6 Flash is $1.68 cheaper per 1M input tokens (95.7% lower; 23.3x difference).

Cheaper output Seed 1.6 Flash $14 vs $0.3 / 1M

Seed 1.6 Flash is $13.7 cheaper per 1M output tokens (97.9% lower; 46.7x difference).

Larger context GPT-5.2-Codex 400K vs 262.14K

GPT-5.2-Codex has 137.86K more context (1.53x larger).

Sample workload Seed 1.6 Flash $8.75 vs $0.22

Seed 1.6 Flash is $8.53 cheaper on the standard workload (97.4% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
GPT-5.2-Codex Calculating… Estimated API cost
Seed 1.6 Flash 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 Flash has the lower input price; Seed 1.6 Flash has the lower output price; GPT-5.2-Codex offers the larger context window. For the 1M input plus 500K output sample, Seed 1.6 Flash is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $8.75 for GPT-5.2-Codex and $0.22 for Seed 1.6 Flash.

Best Fit

Choose GPT-5.2-Codex when you care most about larger context window.

Choose Seed 1.6 Flash 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 1.6 Flash is estimated at $0.22 vs $8.75 for GPT-5.2-Codex, saving $8.53 (97.4% lower).
  • Seed 1.6 Flash is $8.53 cheaper on the standard workload (97.4% lower).
  • Seed 1.6 Flash is $1.68 cheaper per 1M input tokens (95.7% lower; 23.3x difference).
  • Seed 1.6 Flash is $13.7 cheaper per 1M output tokens (97.9% lower; 46.7x difference).
  • GPT-5.2-Codex has 137.86K more context (1.53x larger).
Head-to-Head Specs
FeatureGPT-5.2-Codex
(OpenAI)		Seed 1.6 Flash
(ByteDance Seed)
Input Price
prompt tokens per 1M		$1.75$0.075
Completion Price
per 1M tokens		$14$0.3
Sample Workload Cost
1M input + 500K output		$8.75$0.22
Context Window400K262.14K
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionSeed 1.6 FlashOn the standard 1M input plus 500K output workload, Seed 1.6 Flash is estimated at $0.22 vs $8.75 for GPT-5.2-Codex, saving $8.53 (97.4% lower).
High-volume input processingSeed 1.6 FlashLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsSeed 1.6 FlashLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGPT-5.2-CodexA larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • gpt-oss-120b (free) can replace GPT-5.2-Codex when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace GPT-5.2-Codex when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace GPT-5.2-Codex when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace GPT-5.2-Codex when lower sample workload cost matters most: $0.13.
Larger context near this budget
  • Llama 4 Scout offers 10M context with $0.23 sample workload cost.
  • Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
  • Grok 4.20 offers 2M context with $2.5 sample workload cost.
  • GPT-5.4 offers 1.05M context with $10 sample workload cost.
Popular competitors
  • No popular competitor is currently available.

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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OpenAI catalog

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ByteDance Seed catalog

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