Claude Sonnet 5 vs Muse Spark 1.3
At a Glance
| Compare | Claude Sonnet 5Anthropic |  Muse Spark 1.3Meta |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #26 of 4660.1 score · 2/3 sources · provisional · missing ARC-AGI-2 · full-core range 40.0–73.4 | UnrankedNot in the 46-model eligible cohort |
| CostLower is better · Published-token output estimate | #29 of 44$0.194 per LiveBench case | UnrankedNot in the 44-model eligible cohort |
| EfficiencyHigher is better · MM Efficiency v1.5 | #30 of 3847.4 score · 2/3 sources · provisional · missing ARC-AGI-2 · full-core range 37.4–54.0 | UnrankedNot in the 38-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $2.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Output priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Context windowMaximum documented tokens | 1,000K | Not reported |
| Model facts checked | Aug 28, 2026View model evidence → | Sep 4, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | Claude Sonnet 5 | Muse Spark 1.3 |
|---|---|---|
| LMArena Agent Arenaagent-2026-09-15-d25aabda0010 · outcome_score · statistical tie | 5.97100% of row best · score · Claude Sonnet 5 (High); 95% CI [4.35064977, 7.58850066]; sessions 30631; observations 3176952; rank 9 | 4.2098% of row best · score · Muse Spark 1.3 (Max); 95% CI [3.33950614, 5.06185896]; sessions 31052; observations 2525117; rank 15 |
| LMArena Document Arenadocument-2026-09-13-d25aabda0010 · arena_rating · statistical tie | 1,466.14100% of row best · rating · claude-sonnet-5-high; 95% CI [1458.49407458, 1473.77896309]; votes 7411; rank 17 | 1,470.66100% of row best · rating · muse-spark-1.3-max; 95% CI [1452.36505006, 1488.94793707]; votes 1006; rank 15 |
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · leader | 1,442.1597% of row best · rating · claude-sonnet-5-high; 95% CI [1437.57467941, 1446.71829948]; votes 35301; rank 62 | 1,489.74100% of row best · rating · muse-spark-1.3-max; 95% CI [1480.91456937, 1498.56660928]; votes 4723; rank 10 |
| LMArena Vision Arenavision-2026-09-13-d25aabda0010 · arena_rating · leader | 1,277.1697% of row best · rating · claude-sonnet-5-high; 95% CI [1269.57643110, 1284.74576666]; votes 10289; rank 32 | 1,314.56100% of row best · rating · muse-spark-1.3-max; 95% CI [1299.74034111, 1329.38210317]; votes 1804; rank 8 |
| LiveBench2026-06-25 · overall · leader | 80.0194% of row best · percent · claude-sonnet-5-xhigh-effort · 19,428 output tokens / case | 85.47100% of row best · percent · muse-spark-1.3-xhigh · 28,234 output tokens / case |
| ToneBench2026-09-11-10-task-4ef099199c9c · overall_score · unverified | 86.51100% of row best · points · Claude Sonnet 5 (max effort) · 71,003 output tokens / case | 82.6396% of row best · points · Muse Spark 1.3 (thinking) · 6,301 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above · 2 ties | 0 benchmark wins | 3 benchmark winsOverall lead |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | Claude Sonnet 5 | Muse Spark 1.3 |
|---|---|---|
| Developer | Anthropic | Meta |
| Family | Claude 5 | Muse Spark |
| Model | Claude Sonnet 5 | Muse Spark 1.3 |
| Version | Claude Sonnet 5 | Muse Spark 1.3 |
| Lifecycle | active | preview |
| Released | 2026-06-30 | 2026-09-02 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image | Text, Image, Video |
| Output modalities | Text | Text |
| Context window | 1,000K | Unknown |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Anthropic (Standard), Deepinfra (Standard), Openrouter (Standard) | Unknown |
| Capabilities | chat, generation, reasoning, tools | chat, computer-use, generation, reasoning, research, tools |
Claude Sonnet 5 Capabilities
Muse Spark 1.3 Capabilities
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Primary Evidence
Sources and Freshness
Questions
Claude Sonnet 5 vs Muse Spark 1.3 FAQs
Is Claude Sonnet 5 or Muse Spark 1.3 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Sonnet 5 and Muse Spark 1.3, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Sonnet 5 or Muse Spark 1.3?+
Only Claude Sonnet 5 has a directly sourced input price: $2.00 per million tokens. Only Claude Sonnet 5 has a directly sourced output price: $10.00 per million tokens.
Which has a larger context window, Claude Sonnet 5 or Muse Spark 1.3?+
Neither model has a larger sourced context window in this comparison. Claude Sonnet 5 is 1,000K and Muse Spark 1.3 is —.
Which performs better in benchmarks, Claude Sonnet 5 or Muse Spark 1.3?+
Muse Spark 1.3 leads the current overall benchmark count. The result uses 5 protocol-matched benchmarks from 2 publishers; it is not a universal quality score.
Can Claude Sonnet 5 or Muse Spark 1.3 be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Claude Sonnet 5 is not marked open weight; Muse Spark 1.3 is not marked open weight.
Can Claude Sonnet 5 and Muse Spark 1.3 understand images?+
Claude Sonnet 5 is documented with image input; Muse Spark 1.3 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Sonnet 5 or Muse Spark 1.3?+
Neither has a larger sourced maximum output. Claude Sonnet 5 is 128K and Muse Spark 1.3 is —.
Do Claude Sonnet 5 and Muse Spark 1.3 support reasoning and tool use?+
Claude Sonnet 5: reasoning, tool calling, and image input. Muse Spark 1.3: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Sonnet 5 or Muse Spark 1.3?+
Claude Sonnet 5 has 3 sourced provider routes; Muse Spark 1.3 has 0, so Claude Sonnet 5 has broader tracked availability.
Which offers better value, Claude Sonnet 5 or Muse Spark 1.3?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.