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Comparison of OpenAI: o3 (batch), Meta: Muse Spark Open
2 modelsopenaiOpenAI: o3 (batch)Remove ×metaMeta: Muse Spark OpenRemove ×
What’s differento3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....OpenRouter lists a 1,048,576-token context and up to 943,718 output tokens for this open-weight model aimed at agentic coding.
DateApr 16, 2025ListedOct 15, 2026Released
Listed rate$1.00 in / $4.00 out/ 1M tokensOpenAI · via OpenRouter · all routes ↗openai$1.25 in / $4.25 out/ 1M tokensbaseten · via Hugging Face · all routes ↗
Provider endpoints2 endpoints →8 endpoints →
AA Intelligence ↗4.3.2Not reported38.87 ↗Effort: xhigh · XhighIndependent result
AA-Briefcase ↗1.1Not reported1,279.25 ↗Effort: xhigh · XhighIndependent result
GDPval-AA ↗2.1Not reported1,401.12 ↗Effort: xhigh · XhighIndependent result
AutomationBench-AA ↗AA Index 4.3.2 collectionNot reported49.71% ↗Effort: xhigh · XhighIndependent result
Terminal-Bench 4.0 · AA ↗Not reported8.08% ↗Effort: xhigh · XhighHarness unreportedIndependent result
SciCode ↗AA Index 4.3.2 collectionNot reported58.45% ↗AA · Under reviewEffort: xhigh · XhighIndependent result
Humanity’s Last Exam ↗AA Index 4.3.2 collectionNot reported43.88% ↗Effort: xhigh · XhighIndependent result
GDP.pdf ↗AA Index 4.3.2 collectionNot reported18.6% ↗Effort: xhigh · XhighIndependent result
CritPt ↗AA Index 4.3.2 collectionNot reported14.86% ↗AA · Under reviewEffort: xhigh · XhighIndependent result
AA-Omniscience ↗AA Index 4.3.2 collectionNot reported24.65 ↗Effort: xhigh · XhighIndependent result
AA-LCR ↗1.1Not reported78.33% ↗Effort: xhigh · XhighIndependent result
LiveBench ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported57.57% ↗Effort: max · single run · equal mean of 7 suitesIndependent result
LiveBench Design ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported60.3% ↗Effort: max · single runIndependent result
LiveBench Research ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported80.3% ↗Effort: max · single runIndependent result
LiveBench Browser Use ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported36% ↗Effort: max · single runIndependent result
LiveBench Coding ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported73.6% ↗Effort: max · single runIndependent result
LiveBench Agentic ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported18.9% ↗Effort: max · single runIndependent result
LiveBench Data Analysis ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported60.2% ↗Effort: max · single runIndependent result
LiveBench Reasoning ↗2.0 · 2026-10-14 (dataset 2026-09-02)Not reported73.7% ↗Effort: max · single runIndependent result
Context window200K1M
Max output100K943.7K
Parameters——
Tool callingSupportedSupported
Structured outputSupportedSupported
Image inputSupportedSupported
Audio inputNot reportedSupported
Video inputNot reportedSupported
ReasoningSupportedSupported
Prompt cachingSupportedSupported
Open weightsNot reportedSupported

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