DeepSeek-V4-FlashvsMuse Spark 1.2
DeepSeek-V4-Flash | Muse Spark 1.2 | |
|---|---|---|
| Specifications | ||
Context window | — | 1M |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 18% | — |
Agentic coding DeepSWE 1.1Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | — | 59.3% |
Competitive coding LiveCodeBenchCoding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. | 91.6% | — |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | — | 82.9% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 88.1% | — |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | 1577 | — |
| Overview | ||
| Company | DeepSeek | Meta |
| Release date | Apr 24 2026 | Aug 5 2026 |
| Access | Open Weight | Proprietary |
Which is better: DeepSeek-V4-Flash or Muse Spark 1.2?
DeepSeek-V4-Flash and Muse Spark 1.2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek-V4-Flash shipped 103 days before Muse Spark 1.2, so benchmark comparisons should account for the intervening progress.
DeepSeek-V4-Flash is open weight, while Muse Spark 1.2 is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek-V4-Flash and Muse Spark 1.2 don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
Muse Spark 1.2 was released by Meta on Aug 5 2026.
DeepSeek-V4-Flash is an open weight model released by DeepSeek. Muse Spark 1.2 is a proprietary model released by Meta.
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