Claude 3.5 Sonnet (upgraded)vsMuse Spark 1.2
Claude 3.5 Sonnet (upgraded) | Muse Spark 1.2 | |
|---|---|---|
| Specifications | ||
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | — | 1M |
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | — | $1.25Meta |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | — | $4.25Meta |
| BenchmarksPublished by one model only | ||
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 49% | — |
DeepSWE 1.1Agentic coding — Artificial 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% |
Terminal-Bench 2.1Agentic terminal coding — Can 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% |
Arena Elo (Text)Community preference — Real people chat with two anonymous AIs side by side and vote for the answer they prefer. Votes become a chess-style Elo rating on arena.ai — it measures which AI people actually like, not test scores. Higher is better. | — | 1498 |
Arena Elo (Code)Community preference (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. | — | 1535 |
| Overview | ||
| Company | Anthropic | Meta |
| Release date | Oct 22 2024 | Aug 5 2026 |
| Access | Proprietary | Proprietary |
Other comparisons
Claude 3.5 Sonnet (upgraded)vsGPT-5.6 SolMuse Spark 1.2vsGPT-5.6 SolClaude 3.5 Sonnet (upgraded)vsGemini 3.7 FlashMuse Spark 1.2vsGemini 3.7 FlashClaude 3.5 Sonnet (upgraded)vsGrok 4.6Muse Spark 1.2vsGrok 4.6Claude 3.5 Sonnet (upgraded)vsDeepSeek-V4-Pro-0813Muse Spark 1.2vsDeepSeek-V4-Pro-0813Claude 3.5 Sonnet (upgraded)vsMistral Medium 3.5Muse Spark 1.2vsMistral Medium 3.5Claude 3.5 Sonnet (upgraded)vsKimi K3Muse Spark 1.2vsKimi K3
Frequently asked questions
Claude 3.5 Sonnet (upgraded) and Muse Spark 1.2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 3.5 Sonnet (upgraded) shipped 652 days before Muse Spark 1.2, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — Claude 3.5 Sonnet (upgraded) and Muse Spark 1.2 don't publish scores on any of the same benchmarks.
Claude 3.5 Sonnet (upgraded) was released by Anthropic on Oct 22 2024.
Muse Spark 1.2 was released by Meta on Aug 5 2026.