GPT-5.3 Chat vs Nova Micro
Comparing GPT-5.3 Chat and Nova Micro across benchmarks, pricing, and capabilities.
OpenAI · Amazon · Updated for 2026
Which is better?
GPT-5.3 Chat and Nova Micro trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Nova Micro is roughly 83.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GPT-5.3 Chat
- you want the most recent training data — it shipped Mar 2026
Choose Nova Micro
- cost matters — it's about 83.7x cheaper per token
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.3 Chat and Nova Microdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.3 Chat ($1.75/1M tokens) is 58.3x more expensive than Nova Micro ($0.03/1M tokens).
For output processing, GPT-5.3 Chat ($14.00/1M tokens) is 100.0x more expensive than Nova Micro ($0.14/1M tokens).
In conclusion, GPT-5.3 Chat is more expensive than Nova Micro.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 128,000 tokens. Nova Micro can generate longer responses up to 128,000 tokens, while GPT-5.3 Chat is limited to 16,384 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.3 Chat supports multimodal inputs, whereas Nova Micro does not.
GPT-5.3 Chat can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.3 Chat
Nova Micro
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-5.3 Chat was released on 2026-03-04, while Nova Micro was released on 2024-11-20.
GPT-5.3 Chat is 16 months newer than Nova Micro.
Mar 4, 2026
5 months ago
1.3yr newerNov 20, 2024
1.8 years ago
Knowledge Cutoff
When training data ends
GPT-5.3 Chat has a documented knowledge cutoff of 2025-08-31, while Nova Micro's cutoff date is not specified.
We can confirm GPT-5.3 Chat's training data extends to 2025-08-31, but cannot make a direct comparison without Nova Micro's cutoff date.
Aug 2025
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Provider Availability
GPT-5.3 Chat is available from OpenAI. Nova Micro is available from Bedrock.
GPT-5.3 Chat
Nova Micro
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5.3 Chat and Nova Micro side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5.3 Chat vs Nova Micro.