Muse Spark 1.1 vs GPT-5 Nano
At a Glance
| Compare |  Muse Spark 1.1Meta |  GPT-5 NanoOpenAI |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | UnrankedNot in the 46-model eligible cohort | #46 of 460.0 score · 2/3 sources · provisional · missing LiveBench · full-core range 0.0–33.3 |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | Not reported | $0.025Openrouter ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | Not reported | $0.20Openrouter ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 1,000K | 400K |
| 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 | Muse Spark 1.1 | GPT-5 Nano |
|---|---|---|
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · leader | 1,480.17100% of row best · rating · muse-spark-1.1; 95% CI [1475.34892554, 1484.99642998]; votes 27615; rank 15 | 1,319.7289% of row best · rating · gpt-5-nano-high; 95% CI [1312.87607943, 1326.57003978]; votes 8128; rank 218 |
| LMArena Vision Arenavision-2026-09-13-d25aabda0010 · arena_rating · leader | 1,294.16100% of row best · rating · muse-spark-1.1; 95% CI [1286.17018729, 1302.15601223]; votes 8447; rank 21 | 1,159.1090% of row best · rating · gpt-5-nano-high; 95% CI [1148.05999135, 1170.13906838]; votes 3948; rank 100 |
| ToneBench2026-09-11-10-task-4ef099199c9c · overall_score · unverified | 80.76100% of row best · points · Muse Spark 1.1 (thinking) · 6,037 output tokens / case | 61.6276% of row best · points · GPT-5 nano · 7,465 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above | 2 benchmark winsNo overall winner | 0 benchmark winsNo 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 | Muse Spark 1.1 | GPT-5 Nano |
|---|---|---|
| Developer | Meta | OpenAI |
| Family | Muse Spark | Gpt 5 |
| Model | Muse Spark 1.1 | GPT-5 Nano |
| Version | Muse Spark 1.1 | GPT-5 Nano |
| Lifecycle | preview | active |
| Released | 2026-07-09 | 2025-08-07 |
| Knowledge cutoff | Unknown | 2024-05-31 |
| Input modalities | Text, Image, Video, Audio | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,000K | 400K |
| 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 | Unknown | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, computer-use, generation, reasoning, research, structured_outputs, tools | chat, generation, reasoning, structured_outputs, tools |
Muse Spark 1.1 Capabilities
GPT-5 Nano Capabilities
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Primary Evidence
Sources and Freshness
Questions
Muse Spark 1.1 vs GPT-5 Nano FAQs
Is Muse Spark 1.1 or GPT-5 Nano better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Muse Spark 1.1 and GPT-5 Nano, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Muse Spark 1.1 or GPT-5 Nano?+
Only GPT-5 Nano has a directly sourced input price: $0.025 per million tokens. Only GPT-5 Nano has a directly sourced output price: $0.20 per million tokens.
Which has a larger context window, Muse Spark 1.1 or GPT-5 Nano?+
Muse Spark 1.1 has the larger sourced context window. Muse Spark 1.1 supports 1,000K and GPT-5 Nano supports 400K.
Which performs better in benchmarks, Muse Spark 1.1 or GPT-5 Nano?+
There is no overall benchmark winner: An overall winner requires at least two decisive benchmarks from at least two original publishers.
Can Muse Spark 1.1 or GPT-5 Nano be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Muse Spark 1.1 is not marked open weight; GPT-5 Nano is not marked open weight.
Can Muse Spark 1.1 and GPT-5 Nano understand images?+
Muse Spark 1.1 is documented with image input; GPT-5 Nano is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Muse Spark 1.1 or GPT-5 Nano?+
Neither has a larger sourced maximum output. Muse Spark 1.1 is — and GPT-5 Nano is 128K.
Do Muse Spark 1.1 and GPT-5 Nano support reasoning and tool use?+
Muse Spark 1.1: reasoning, tool calling, and image input. GPT-5 Nano: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Muse Spark 1.1 or GPT-5 Nano?+
Muse Spark 1.1 has 0 sourced provider routes; GPT-5 Nano has 2, so GPT-5 Nano has broader tracked availability.
Which offers better value, Muse Spark 1.1 or GPT-5 Nano?+
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.