Price Per TokenPrice Per Token
Anthropic
Anthropic
vs
Xai
Xai

Claude Opus 4.5 vs Grok 3 Mini

A detailed comparison of pricing, benchmarks, and capabilities

108 out of our 483 tracked models have had a price change in March.

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Key Takeaways

Claude Opus 4.5 wins:

  • Larger context window
  • Higher intelligence benchmark
  • Better at coding
  • Supports vision

Grok 3 Mini wins:

  • Cheaper input tokens
  • Cheaper output tokens
  • Faster response time
  • Better at math
Price Advantage
Grok 3 Mini
Benchmark Advantage
Claude Opus 4.5
Context Window
Claude Opus 4.5
Speed
Grok 3 Mini

Pricing Comparison

Price Comparison

MetricClaude Opus 4.5Grok 3 MiniWinner
Input (per 1M tokens)$5.00$0.25 Grok 3 Mini
Output (per 1M tokens)$25.00$0.50 Grok 3 Mini
Cache Read (per 1M)$0.50$0.07 Grok 3 Mini
Cache Write (per 1M)$6.25N/A Claude Opus 4.5
Using a 3:1 input/output ratio, Grok 3 Mini is 97% cheaper overall.

Claude Opus 4.5 Providers

No provider data available

Grok 3 Mini Providers

No provider data available

Benchmark Comparison

7
Benchmarks Compared
5
Claude Opus 4.5 Wins
1
Grok 3 Mini Wins

Benchmark Scores

BenchmarkClaude Opus 4.5Grok 3 MiniWinner
Intelligence Index
Overall intelligence score
43.132.1
Coding Index
Code generation & understanding
42.925.2
Math Index
Mathematical reasoning
62.784.7
MMLU Pro
Academic knowledge
88.982.8
GPQA
Graduate-level science
81.079.1
LiveCodeBench
Competitive programming
73.869.6
AIME
Competition math
-93.3-
Claude Opus 4.5 significantly outperforms in coding benchmarks.

Cost vs Quality

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Claude Opus 4.5
Other models

Context & Performance

Context Window

Claude Opus 4.5
200,000
tokens
Grok 3 Mini
131,072
tokens
Claude Opus 4.5 has a 34% larger context window.

Speed Performance

MetricClaude Opus 4.5Grok 3 MiniWinner
Tokens/second63.2 tok/s196.6 tok/s
Time to First Token1.33s0.47s
Grok 3 Mini responds 211% faster on average.

Capabilities

Feature Comparison

FeatureClaude Opus 4.5Grok 3 Mini
Vision (Image Input)
Tool/Function Calls
Reasoning Mode
Audio Input
Audio Output
PDF Input
Prompt Caching
Web Search

License & Release

PropertyClaude Opus 4.5Grok 3 Mini
LicenseProprietaryProprietary
AuthorAnthropicXai
ReleasedNov 2025Jun 2025

Claude Opus 4.5 Modalities

Input
fileimagetext
Output
text

Grok 3 Mini Modalities

Input
text
Output
text

Related Comparisons

Compare Claude Opus 4.5 with:

Compare Grok 3 Mini with:

Frequently Asked Questions

Grok 3 Mini has cheaper input pricing at $0.25/M tokens. Grok 3 Mini has cheaper output pricing at $0.50/M tokens.
Claude Opus 4.5 scores higher on coding benchmarks with a score of 42.9, compared to Grok 3 Mini's score of 25.2.
Claude Opus 4.5 has a 200,000 token context window, while Grok 3 Mini has a 131,072 token context window.
Claude Opus 4.5 supports vision. Grok 3 Mini does not support vision.