Price Per TokenPrice Per Token
Allenai
vs
OpenAI
OpenAI

Molmo 2 4B vs GPT-5 Mini

A detailed comparison of pricing, benchmarks, and capabilities

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Key Takeaways

Molmo 2 4B wins:

  • Cheaper input tokens
  • Cheaper output tokens

GPT-5 Mini wins:

  • Larger context window
  • Faster response time
  • Higher intelligence benchmark
  • Better at coding
  • Better at math
  • Supports vision
  • Supports tool calls
Price Advantage
Molmo 2 4B
Benchmark Advantage
GPT-5 Mini
Context Window
GPT-5 Mini
Speed
GPT-5 Mini

Pricing Comparison

Price Comparison

MetricMolmo 2 4BGPT-5 MiniWinner
Input (per 1M tokens)$0.20$0.25 Molmo 2 4B
Output (per 1M tokens)$0.20$2.00 Molmo 2 4B
Cache Read (per 1M)$0.10$0.03 GPT-5 Mini
Using a 3:1 input/output ratio, Molmo 2 4B is 71% cheaper overall.

Molmo 2 4B Providers

No provider data available

GPT-5 Mini Providers

No provider data available

Benchmark Comparison

6
Benchmarks Compared
0
Molmo 2 4B Wins
0
GPT-5 Mini Wins

Benchmark Scores

BenchmarkMolmo 2 4BGPT-5 MiniWinner
Intelligence Index
Overall intelligence score
-41.2-
Coding Index
Code generation & understanding
-35.3-
Math Index
Mathematical reasoning
-90.7-
MMLU Pro
Academic knowledge
-83.7-
GPQA
Graduate-level science
-82.8-
LiveCodeBench
Competitive programming
-83.8-
GPT-5 Mini significantly outperforms in coding benchmarks.

Cost vs Quality

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Context & Performance

Context Window

Molmo 2 4B
N/A
tokens
GPT-5 Mini
400,000
tokens

Speed Performance

MetricMolmo 2 4BGPT-5 MiniWinner
Tokens/secondN/A68.9 tok/s
Time to First TokenN/A105.79s

Capabilities

Feature Comparison

FeatureMolmo 2 4BGPT-5 Mini
Vision (Image Input)
Tool/Function Calls
Reasoning Mode
Audio Input
Audio Output
PDF Input
Prompt Caching
Web Search

License & Release

PropertyMolmo 2 4BGPT-5 Mini
LicenseProprietaryProprietary
AuthorAllenaiOpenAI
ReleasedUnknownAug 2025

Molmo 2 4B Modalities

Input
Output

GPT-5 Mini Modalities

Input
textimagefile
Output
text

Related Comparisons

Compare Molmo 2 4B with:

Compare GPT-5 Mini with:

Frequently Asked Questions

Molmo 2 4B has cheaper input pricing at $0.20/M tokens. Molmo 2 4B has cheaper output pricing at $0.20/M tokens.
GPT-5 Mini scores higher on coding benchmarks with a score of 35.3, compared to Molmo 2 4B's score of N/A.
Molmo 2 4B has a unknown token context window, while GPT-5 Mini has a 400,000 token context window.
Molmo 2 4B does not support vision. GPT-5 Mini supports vision.
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