ResearchLLM Verifications Leaderboard

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

Head to head · tested 27 Oct 2026

GPT-5.3-Codex vs Muse Wonder: accuracy, speed and price

Similar accuracy; GPT-5.3-Codex costs less per question.

OpenAIGPT-5.3-Codex82.5% score · #3$0.01 per question95 tok/sMetaMuse Wonder78.8% score · #7$0.021 per question175 tok/s

Verdict

Built from the measurements below

  • Accuracy is too close to call: GPT-5.3-Codex scored 82.5% and Muse Wonder 78.8% on the same 80 questions, a gap within what chance alone could produce.
  • GPT-5.3-Codex is 2.1× cheaper per question as billed ($0.01 vs $0.021), reasoning tokens included.
  • Muse Wonder generates text 1.8× faster: 175 tokens per second against 95.
  • GPT-5.3-Codex starts answering sooner: 1.4 s to the first token, against 16.1 s for Muse Wonder.
  • Muse Wonder accepts more context: 1M tokens against 400k.

Which should you choose?

Choose GPT-5.3-Codex for the lower cost per correct answer ($0.013 against $0.027) and a quicker first token. Choose Muse Wonder for faster streaming and a 1M-token context window. The widest subject gap is in medicine: GPT-5.3-Codex 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 +3.7 points (z = 0.60). 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

MeasureGPT-5.3-CodexMuse WonderEdge
Verification scoreHigher is better82.5%78.8%Too close to call
Cost per questionLower is better$0.01$0.021GPT-5.3-Codex
Output speedHigher is better95175Muse Wonder
Time to first tokenLower is better1.4 s16.1 sGPT-5.3-Codex
End-to-end response timeLower is better5.2 s20.8 sGPT-5.3-Codex
Tokens per questionLower is better6991,014GPT-5.3-Codex
Context windowHigher is better400k1MMuse Wonder

Side by side

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

Every measure

GPT-5.3-Codex first, Muse Wonder second

Verification scorehigher is better
GPT-5.3-Codex82.5%
Muse Wonder78.8%
Cost per questionlower is better
GPT-5.3-Codex$0.01
Muse Wonder$0.021
Output speedhigher is better
GPT-5.3-Codex95
Muse Wonder175
Time to first tokenlower is better
GPT-5.3-Codex1.4 s
Muse Wonder16.1 s
End-to-end response timelower is better
GPT-5.3-Codex5.2 s
Muse Wonder20.8 s
Tokens per questionlower is better
GPT-5.3-Codex699
Muse Wonder1,014
Context windowhigher is better
GPT-5.3-Codex400k
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

SpecificationGPT-5.3-CodexMuse Wonder
CreatorOpenAIMeta
Released24 Feb 202612 Oct 2026
Weights——
ReasoningYesYes
Inputtext, image, filetext, image, video, file, audio
Outputtexttext
Context window400k tokens1M tokens
Knowledge cutoff——
List price in / out per 1M$1.75 / $14$4 / $20
Blended price per 1M (3:1)$4.81$8.00
Cheapest hostAzure · $1.75 / $14Meta · $4 / $20
Hosts on OpenRouter21
Last tested27 Oct 202627 Oct 2026

Compare any two models →

GPT-5.3-Codex vs Muse Wonder: frequently asked questions

Is GPT-5.3-Codex better than Muse Wonder?
On accuracy they are statistically tied: GPT-5.3-Codex scored 82.5% and Muse Wonder 78.8% on the same 80 questions from open datasets. Similar accuracy; GPT-5.3-Codex costs less per question.
Which is cheaper, GPT-5.3-Codex or Muse Wonder?
GPT-5.3-Codex is cheaper: $0.01 per question as billed, against $0.021. List prices: GPT-5.3-Codex $1.75 in / $14 out, Muse Wonder $4 in / $20 out per million tokens.
Which is faster, GPT-5.3-Codex or Muse Wonder?
Muse Wonder is faster at 175 output tokens per second, against 95. Time to first token: 1.4 s for GPT-5.3-Codex, 16.1 s for Muse Wonder.
Which has the larger context window, GPT-5.3-Codex or Muse Wonder?
Muse Wonder, with 1M tokens against 400k.