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GPT-6.1 Sol vs Muse Spark Open

Detailed technical comparison between GPT-6.1 Sol (OpenAI) and Muse Spark Open (Meta). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

GPT-6.1 Sol: 5 WinsvsMuse Spark Open: 1 Win
Context Leader

GPT-6.1 Sol

1,050,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Muse Spark Open

$1.25 / MTok
OpenAIactive

GPT-6.1 Sol

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional...

View GPT-6.1 Sol Full Specs →
Metaactive

Muse Spark Open

Muse Spark Open is a coding-optimized open-weight model. Trained specifically for agentic coding workflows, it delivers higher first-attempt accuracy, reliable tool calling, and deep codebase understanding across the repos developers...

View Muse Spark Open Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-6.1 SolMuse Spark Open
ProviderOpenAIMeta
Context Window1,050,000 tokens🏆1,048,576 tokens
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelmanaged apimanaged api
Production StabilityStable releaseNot verified
API AvailableYesYes
Released Date2026-09-292026-10-15

API Pricing Comparison

Input Price per Million Tokens

GPT-6.1 Sol

$2.00

Muse Spark Open

$1.25

Output Price per Million Tokens

GPT-6.1 Sol

$10.00

Muse Spark Open

$4.25

💡 Cost Ratio: Muse Spark Open is 1.6x cheaper per input token than GPT-6.1 Sol.

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
79.0%vs81.6%+2.6% Muse Spark Open
GPT-6.1 Sol
Muse Spark Open 🏆
HumanEvalPython coding & logic synthesis
77.2%vs76.4%+0.8% GPT-6.1 Sol
GPT-6.1 Sol 🏆
Muse Spark Open
MATHComplex mathematical problem solving
54.4%vs53.6%+0.8% GPT-6.1 Sol
GPT-6.1 Sol 🏆
Muse Spark Open
GPQAGraduate-level expert reasoning
39.8%vs39.0%+0.8% GPT-6.1 Sol
GPT-6.1 Sol 🏆
Muse Spark Open
HellaSwagCommonsense reasoning and inference
82.0%vs81.2%+0.8% GPT-6.1 Sol
GPT-6.1 Sol 🏆
Muse Spark Open
MT-BenchMulti-turn conversation flow quality
8.5%vs8.4%+0.1% GPT-6.1 Sol
GPT-6.1 Sol 🏆
Muse Spark Open

GPT-6.1 Sol Quirks & Gotchas

No developer gotchas reported.

Muse Spark Open Quirks & Gotchas

No developer gotchas reported.

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