API cost decision in 10 seconds

GPT-5.3 Chat vs Nova Micro 1.0

Pick Nova Micro 1.0 when budget is the priority.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Nova Micro 1.0 when budget is the priority.

On the standard 1M input plus 500K output workload, Nova Micro 1.0 is estimated at $0.11 vs $8.75 for GPT-5.3 Chat, saving $8.64 (98.8% lower).

Cost-first pickNova Micro 1.0
Context-first pickBoth models
Sample savings$8.6498.8%
10x traffic gap$86.45

The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $86.45. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Nova Micro 1.0 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGPT-5.3 ChatNova Micro 1.0
Input-heavy / RAG5M input + 500K outputNova Micro 1.0$15.75$0.25
Balanced workload1M input + 1M outputNova Micro 1.0$15.75$0.18
Output-heavy chatbot1M input + 5M outputNova Micro 1.0$71.75$0.74
Cheaper input Nova Micro 1.0 $1.75 vs $0.035 / 1M

Nova Micro 1.0 is $1.72 cheaper per 1M input tokens (98% lower; 50x difference).

Cheaper output Nova Micro 1.0 $14 vs $0.14 / 1M

Nova Micro 1.0 is $13.86 cheaper per 1M output tokens (99% lower; 100x difference).

Larger context Tie 128K vs 128K

Both models report the same context window at 128K tokens.

Sample workload Nova Micro 1.0 $8.75 vs $0.11

Nova Micro 1.0 is $8.64 cheaper on the standard workload (98.8% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
GPT-5.3 Chat Calculating… Estimated API cost
Nova Micro 1.0 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

Nova Micro 1.0 has the lower input price; Nova Micro 1.0 has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Nova Micro 1.0 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-5.3 Chat and $0.11 for Nova Micro 1.0.

Best Fit

Choose GPT-5.3 Chat when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Choose Nova Micro 1.0 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, Nova Micro 1.0 is estimated at $0.11 vs $8.75 for GPT-5.3 Chat, saving $8.64 (98.8% lower).
  • Nova Micro 1.0 is $8.64 cheaper on the standard workload (98.8% lower).
  • Nova Micro 1.0 is $1.72 cheaper per 1M input tokens (98% lower; 50x difference).
  • Nova Micro 1.0 is $13.86 cheaper per 1M output tokens (99% lower; 100x difference).
  • Both models report the same context window at 128K tokens.
Head-to-Head Specs
FeatureGPT-5.3 Chat
(OpenAI)		Nova Micro 1.0
(Amazon)
Input Price
prompt tokens per 1M		$1.75$0.035
Completion Price
per 1M tokens		$14$0.14
Sample Workload Cost
1M input + 500K output		$8.75$0.11
Context Window128K128K
Release Date
Popularity#113#146

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionNova Micro 1.0On the standard 1M input plus 500K output workload, Nova Micro 1.0 is estimated at $0.11 vs $8.75 for GPT-5.3 Chat, saving $8.64 (98.8% lower).
High-volume input processingNova Micro 1.0Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsNova Micro 1.0Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workTieA 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-5.3 Chat when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace GPT-5.3 Chat when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace GPT-5.3 Chat when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace GPT-5.3 Chat 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 offers 2M context with $2.5 sample workload cost.
  • Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
  • GPT-5.4 offers 1.05M context with $10 sample workload cost.

Cheaper alternatives

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

Open cheapest models

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.

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OpenAI catalog

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

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Amazon catalog

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

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GPT-5.3 Chat

GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...

Nova Micro 1.0

Amazon Nova Micro 1.0 is a text-only model that delivers the lowest latency responses in the Amazon Nova family of models at a very low cost. With a context length...