AI · Tool

AI model compare

API prices and Arena ranks. Pick 2–3 models to compare.

2Claude Opus 5.51515Anthropic · 1M context · Arena claude-opus-5.5-high$4.00$20.003Claude Fable 5.11510Anthropic · 1M context · Arena claude-fable-5.1-max$10.00$50.007Gemini 3.8 Flash1499Google · 1M context · Arena gemini-3.8-flash-high$0.75$3.758Claude Opus 4.61498Anthropic · 1M context · Arena claude-opus-4-6$5.00$25.0018Gemini 3.1 Pro Preview1481Google · 1M context · Arena gemini-3.1-pro-preview$2.00$12.0034GPT-5.51467OpenAI · 1.05M context · Arena gpt-5.5$5.00$30.0055Grok 4.51448SpaceXAI · 500K context · Arena grok-4.5$2.00$6.00—DeepSeek V3.2—DeepSeek · 164K context$0.259$0.80

$ per 1M tokens, input then output. OpenRouter price, Oct 13, 2026 (may differ from vendor list prices). Rank and score: LMArena text leaderboard, overall, published Oct 8, 2026 (lmarena-ai/leaderboard-dataset, CC BY 4.0). Closest Arena entry, including -high and -max variants when that is the listed name.

2 selected

Claude Opus 5.5 · Claude Fable 5.1

Compare

Side by side

Claude Opus 5.5

Claude Fable 5.1

Input / 1M

$4.00

Input / 1M

$10.00

Output / 1M

$20.00

Output / 1M

$50.00

Context

Arena rank

Est. per monthExample

M inM out

$80

$200

Example usage × OpenRouter price. Not a quote.