LLM Comparison

Claude Opus 4.6 (Fast) vs Claude Sonnet 4.6

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 Opus 4.6 (Fast)73 / $90.00Claude Sonnet 4.667.2 / $9.00

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2/6 models
Same tier:
 AnthropicClaude Opus 4.6 (Fast)AnthropicClaude Sonnet 4.6
OrganizationAnthropicAnthropicAnthropicAnthropic
OpenTools Score
73
0.8
67
7.5
FamilyClaudeClaude
StatusCurrentCurrent
Release DateApr 2026Feb 2026
Context Window1.0M tokens1.0M tokens
Input Price$30.00/M tokens$3.00/M tokens
Output Price$150.00/M tokens$15.00/M tokens
Pricing NotesCache read: $3.0000/M tokensCache read: $0.3000/M tokens
Capabilities
textvisioncodetool-use
textvisioncodetool-use
Max Output128K tokens128K tokens
API Identifieranthropic/claude-opus-4.6-fastanthropic/claude-sonnet-4.6
Benchmarks
MMLU89.888
HumanEval91.593.7
MATH84.979.5
GPQA72.468.9
 View Claude Opus 4.6 (Fast)View Claude Sonnet 4.6

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 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.

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.

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