Claude Sonnet 4.5 vs Muse Spark 1.1
At a Glance
| Compare | Claude Sonnet 4.5Anthropic |  Muse Spark 1.1Meta |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #36 of 4627.7 score · 2/3 sources · provisional · missing LiveBench · full-core range 18.5–51.8 | UnrankedNot in the 46-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $3.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Output priceFrom · USD / 1M tokens | $15.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Context windowMaximum documented tokens | 200K | 1,000K |
| Model facts checked | Sep 3, 2026View model evidence → | Sep 3, 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 4.5 | Muse Spark 1.1 |
|---|---|---|
| LMArena Document Arenadocument-2026-09-13-d25aabda0010 · arena_rating · statistical tie | 1,449.8199% of row best · rating · claude-sonnet-4-5-20250929; 95% CI [1443.68972646, 1455.92640287]; votes 31455; rank 28 | 1,464.70100% of row best · rating · muse-spark-1.1; 95% CI [1455.86175356, 1473.53929177]; votes 4885; rank 18 |
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · leader | 1,433.9497% of row best · rating · claude-sonnet-4-5-20250929-high-32k; 95% CI [1431.13982742, 1436.74901697]; votes 80980; rank 81 | 1,480.17100% of row best · rating · muse-spark-1.1; 95% CI [1475.34892554, 1484.99642998]; votes 27615; rank 15 |
| ToneBench2026-09-11-10-task-4ef099199c9c · overall_score · unverified | 77.2596% of row best · points · Claude Sonnet 4.5 · 7,415 output tokens / case | 80.76100% of row best · points · Muse Spark 1.1 (thinking) · 6,037 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above · 1 tie | 0 benchmark winsNo overall winner | 1 benchmark winNo overall winner |
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 4.5 | Muse Spark 1.1 |
|---|---|---|
| Developer | Anthropic | Meta |
| Family | Claude 4 | Muse Spark |
| Model | Claude Sonnet 4.5 | Muse Spark 1.1 |
| Version | Claude Sonnet 4.5 | Muse Spark 1.1 |
| Lifecycle | active | preview |
| Released | 2025-09-29 | 2026-07-09 |
| Knowledge cutoff | 2025-01-01 | Unknown |
| Input modalities | Text, Image | Text, Image, Video, Audio |
| Output modalities | Text | Text |
| Context window | 200K | 1,000K |
| 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) | Unknown |
| Capabilities | chat, generation, reasoning, structured_outputs, tools | chat, computer-use, generation, reasoning, research, structured_outputs, tools |
Claude Sonnet 4.5 Capabilities
Muse Spark 1.1 Capabilities
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Primary Evidence
Sources and Freshness
Questions
Claude Sonnet 4.5 vs Muse Spark 1.1 FAQs
Is Claude Sonnet 4.5 or Muse Spark 1.1 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Sonnet 4.5 and Muse Spark 1.1, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Sonnet 4.5 or Muse Spark 1.1?+
Only Claude Sonnet 4.5 has a directly sourced input price: $3.00 per million tokens. Only Claude Sonnet 4.5 has a directly sourced output price: $15.00 per million tokens.
Which has a larger context window, Claude Sonnet 4.5 or Muse Spark 1.1?+
Muse Spark 1.1 has the larger sourced context window. Claude Sonnet 4.5 supports 200K and Muse Spark 1.1 supports 1,000K.
Which performs better in benchmarks, Claude Sonnet 4.5 or Muse Spark 1.1?+
There is no overall benchmark winner: An overall winner requires at least two decisive benchmarks from at least two original publishers.
Can Claude Sonnet 4.5 or Muse Spark 1.1 be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Claude Sonnet 4.5 is not marked open weight; Muse Spark 1.1 is not marked open weight.
Can Claude Sonnet 4.5 and Muse Spark 1.1 understand images?+
Claude Sonnet 4.5 is documented with image input; Muse Spark 1.1 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Sonnet 4.5 or Muse Spark 1.1?+
Neither has a larger sourced maximum output. Claude Sonnet 4.5 is 64K and Muse Spark 1.1 is —.
Do Claude Sonnet 4.5 and Muse Spark 1.1 support reasoning and tool use?+
Claude Sonnet 4.5: reasoning, tool calling, and image input. Muse Spark 1.1: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Sonnet 4.5 or Muse Spark 1.1?+
Claude Sonnet 4.5 has 1 sourced provider route; Muse Spark 1.1 has 0, so Claude Sonnet 4.5 has broader tracked availability.
Which offers better value, Claude Sonnet 4.5 or Muse Spark 1.1?+
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.