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Compare AI models side by side

Choose up to 4 models. Prices, context windows and declared capabilities are read live from the OpenRouter listing, so the table reflects what the providers publish today.

AmazonNova Premier 1.0OpenAIGPT-5.3-Codex
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Side-by-side comparison of Amazon: Nova Premier 1.0, OpenAI: GPT-5.3-Codex
Attribute
AmazonNova Premier 1.0amazon/nova-premier-v1
OpenAIGPT-5.3-Codexopenai/gpt-5.3-codex
Input priceUSD per 1M tokens$2.50$1.75 (best)
Output priceUSD per 1M tokens$12.50 (best)$14.00
Blended price75% in / 25% out$5.00$4.81 (best)
Vs. market median6.3× dearer6.0× dearer
Value rankcheapest = 1#369#360 (best)
Context windowtokens1M (best)400K
Max outputtokens32K128K (best)
Input modalitiestext, imagetext, image, file
Output modalitiestexttext
Tool callingDeclaredDeclared
ReasoningNot declaredDeclared
Structured outputNot declaredDeclared
Listed on OpenRouter2025-10-312026-02-24 (best)

Source: OpenRouter (live)

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Read-out

What the numbers say

  • OpenAI: GPT-5.3-Codex is the cheapest here at $4.81/M blended — 1.0× less than Amazon: Nova Premier 1.0.
  • Amazon: Nova Premier 1.0 offers the largest context window (1M tokens) versus 400K for OpenAI: GPT-5.3-Codex.
  • Reasoning mode is declared for OpenAI: GPT-5.3-Codex only.

Generated from the live figures above. Capabilities are what each provider declares on its listing.

Curated

Head-to-heads we keep up to date

Each comparison resolves to the newest models in the named families and carries our own guidance on which to choose.

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