Price Per TokenPrice Per Token
A
Allenai
vs
OpenAI
OpenAI

Olmo 3.1 32B Instruct vs GPT-5.3 Codex

A detailed comparison of pricing, benchmarks, and capabilities

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Key Takeaways

Olmo 3.1 32B Instruct wins:

  • Cheaper input tokens
  • Cheaper output tokens

GPT-5.3 Codex wins:

  • Larger context window
  • Faster response time
  • Higher intelligence benchmark
  • Better at coding
  • Supports vision
  • Has reasoning mode
Price Advantage
Olmo 3.1 32B Instruct
Benchmark Advantage
GPT-5.3 Codex
Context Window
GPT-5.3 Codex
Speed
GPT-5.3 Codex

Pricing Comparison

Benchmark Comparison

Context & Performance

Capabilities

Feature Comparison

FeatureOlmo 3.1 32B InstructGPT-5.3 Codex
Vision (Image Input)
Tool/Function Calls
Reasoning Mode
Audio Input
Audio Output
PDF Input
Prompt Caching
Web Search

License & Release

PropertyOlmo 3.1 32B InstructGPT-5.3 Codex
LicenseOpen SourceProprietary
AuthorAllenaiOpenAI
ReleasedJan 2026Feb 2026

Olmo 3.1 32B Instruct Modalities

Input
text
Output
text

GPT-5.3 Codex Modalities

Input
textimage
Output
text

Related Comparisons

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Frequently Asked Questions

Olmo 3.1 32B Instruct has cheaper input pricing at $0.20/M tokens. Olmo 3.1 32B Instruct has cheaper output pricing at $0.60/M tokens.
GPT-5.3 Codex scores higher on coding benchmarks with a score of 53.1, compared to Olmo 3.1 32B Instruct's score of 5.6.
Olmo 3.1 32B Instruct has a 65,536 token context window, while GPT-5.3 Codex has a 400,000 token context window.
Olmo 3.1 32B Instruct does not support vision. GPT-5.3 Codex supports vision.

Built by @aellman

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