LLM Comparison

Claude Sonnet 4.6 vs Claude Opus 4.6 (Fast)

Side-by-side specs, pricing & capabilities · Updated April 2026

Price vs Intelligence

8377706457$6.30$33.98$61.65$89.33$117.00Avg Price per M tokensIntelligenceClaude Sonnet 4.667.2 / $9.00Claude Opus 4.6 (Fast)73 / $90.00

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2/6 models
Same tier:
 AnthropicClaude Sonnet 4.6AnthropicClaude Opus 4.6 (Fast)
OrganizationAnthropicAnthropicAnthropicAnthropic
OpenTools Score
67
7.5
73
0.8
FamilyClaudeClaude
StatusCurrentCurrent
Release DateFeb 2026Apr 2026
Context Window1.0M tokens1.0M tokens
Input Price$3.00/M tokens$30.00/M tokens
Output Price$15.00/M tokens$150.00/M tokens
Pricing NotesCache read: $0.3000/M tokensCache read: $3.0000/M tokens
Capabilities
textvisioncodetool-use
textvisioncodetool-use
Max Output128K tokens128K tokens
API Identifieranthropic/claude-sonnet-4.6anthropic/claude-opus-4.6-fast
Benchmarks
MMLU8889.8
HumanEval93.791.5
MATH79.584.9
GPQA68.972.4
 View Claude Sonnet 4.6View Claude Opus 4.6 (Fast)

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
Claude Sonnet 4.6Cheapest$3.00$7.50$10.50—
Claude Opus 4.6 (Fast)$30.00$75.00$105.00+900%

Anthropic

Claude Sonnet 4.6

Claude Sonnet 4.6 is a multimodal llm from Anthropic. Supports up to 1,000,000 token context window. Achieves 88.0% on MMLU. Available from $3.00/M input tokens.

Anthropic

Claude Opus 4.6 (Fast)

Claude Opus 4.6 (Fast) is a multimodal llm from Anthropic. Supports up to 1,000,000 token context window. Achieves 89.8% on MMLU. Available from $30.00/M input tokens.

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