ResearchLLM Verifications Leaderboard

Data as of · 78 models, 80 questions · reviewed by Suhas Bhairav · methodology

Head to head · tested 27 Oct 2026

Claude Opus 5.5 vs Muse Wonder: accuracy, speed and price

Similar accuracy; Claude Opus 5.5 costs less per question.

AnthropicClaude Opus 5.585.0% score · #1$0.015 per question129 tok/sMetaMuse Wonder78.8% score · #7$0.021 per question175 tok/s

Verdict

Built from the measurements below

  • Accuracy is too close to call: Claude Opus 5.5 scored 85.0% and Muse Wonder 78.8% on the same 80 questions, a gap within what chance alone could produce.
  • Claude Opus 5.5 is 1.5× cheaper per question as billed ($0.015 vs $0.021), reasoning tokens included.
  • Muse Wonder generates text 1.4× faster: 175 tokens per second against 129.
  • Claude Opus 5.5 starts answering sooner: 2.3 s to the first token, against 16.1 s for Muse Wonder.

Which should you choose?

Choose Claude Opus 5.5 for the lower cost per correct answer ($0.017 against $0.027), a quicker first token, shorter outputs (about 645 tokens per question against 1,014) and more hosts to choose from on OpenRouter (5 against 1). Choose Muse Wonder for faster streaming. The widest subject gap is in medicine: Claude Opus 5.5 answered 7 of 11 correctly, Muse Wonder 5 of 11. With so few questions per subject, treat this as a lead to test on your own prompts, not a result.

Accuracy gap +6.3 points (z = 1.03). A winner is called only when z is at least 1.96, the usual 95% threshold. Speed, latency and price need a 10% margin.

Head to head

Same questions, same prompt, same API

MeasureClaude Opus 5.5Muse WonderEdge
Verification scoreHigher is better85.0%78.8%Too close to call
Cost per questionLower is better$0.015$0.021Claude Opus 5.5
Output speedHigher is better129175Muse Wonder
Time to first tokenLower is better2.3 s16.1 sClaude Opus 5.5
End-to-end response timeLower is better7.6 s20.8 sClaude Opus 5.5
Tokens per questionLower is better6451,014Claude Opus 5.5
Context windowHigher is better1M1MSimilar

Side by side

Bars are scaled to the larger of the two values. The winner on each measure is marked in bold.

Every measure

Claude Opus 5.5 first, Muse Wonder second

Verification scorehigher is better
Claude Opus 5.585.0%
Muse Wonder78.8%
Cost per questionlower is better
Claude Opus 5.5$0.015
Muse Wonder$0.021
Output speedhigher is better
Claude Opus 5.5129
Muse Wonder175
Time to first tokenlower is better
Claude Opus 5.52.3 s
Muse Wonder16.1 s
End-to-end response timelower is better
Claude Opus 5.57.6 s
Muse Wonder20.8 s
Tokens per questionlower is better
Claude Opus 5.5645
Muse Wonder1,014
Context windowhigher is better
Claude Opus 5.51M
Muse Wonder1M

Score vs. cost per question

Both models in color, every other model in grey

Most attractive quadrant0255075100$0.00001$0.0001$0.001$0.01$0.10Cost per question (USD, log) →Verification score (%) →Qwen3.8 2.4T A95BCommand AReka Flash 3Gemma 4 26B A4BGemma 4 31BQwen3.5 397B A17BHermes 4 405BMuse WonderGrok 4.7o3gpt-oss-20bMinistral 3 3B 2512Nova Micro 1.0Phi 4Granite 4.2 8BHy3GLM 5.3 FlashSolar Pro 4Trinity Large ThinkingMiniMax M3Mistral Large 4Claude Opus 5.5GPT-6.1 SolGemini 4 ArgonGPT-5.4GPT-6 Lunagpt-oss-120bLlama 4 Maverick

Specifications and pricing

From OpenRouter's catalogue, plus the leaderboard's test dates

SpecificationClaude Opus 5.5Muse Wonder
CreatorAnthropicMeta
Released22 Sept 202612 Oct 2026
Weights——
ReasoningYesYes
Inputtext, image, filetext, image, video, file, audio
Outputtexttext
Context window1M tokens1M tokens
Knowledge cutoff——
List price in / out per 1M$4 / $20$4 / $20
Blended price per 1M (3:1)$8.00$8.00
Cheapest hostAmazon Bedrock · $4 / $20Meta · $4 / $20
Hosts on OpenRouter51
Last tested25 Oct 202627 Oct 2026

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Claude Opus 5.5 vs Muse Wonder: frequently asked questions

Is Claude Opus 5.5 better than Muse Wonder?
On accuracy they are statistically tied: Claude Opus 5.5 scored 85.0% and Muse Wonder 78.8% on the same 80 questions from open datasets. Similar accuracy; Claude Opus 5.5 costs less per question.
Which is cheaper, Claude Opus 5.5 or Muse Wonder?
Claude Opus 5.5 is cheaper: $0.015 per question as billed, against $0.021. List prices: Claude Opus 5.5 $4 in / $20 out, Muse Wonder $4 in / $20 out per million tokens.
Which is faster, Claude Opus 5.5 or Muse Wonder?
Muse Wonder is faster at 175 output tokens per second, against 129. Time to first token: 2.3 s for Claude Opus 5.5, 16.1 s for Muse Wonder.
Which has the larger context window, Claude Opus 5.5 or Muse Wonder?
Both accept about the same amount of context: 1M and 1M tokens.