GPT-5.6 Sol vs Muse Spark 1.3 API pricing
For a chat message (1K input, 500 output), Muse Spark 1.3 costs $0.00337 per request and GPT-5.6 Sol costs $0.014, so Muse Spark 1.3 is about 4.1× cheaper.
On the overall leaderboard GPT-5.6 Sol ranks #11 and Muse Spark 1.3 ranks #9.
Prices are the standard pay-as-you-go prices in OpenRouter's public model list, with input at the cache-miss price. Models OpenRouter does not list use the vendor's official price; those listed in CNY are converted to USD at this round's exchange rate.
Prices and rankings
| USD per million tokens | GPT-5.6 Sol | Muse Spark 1.3 |
|---|---|---|
| Input | $4 | $1.25 |
| Output | $20 | $4.25 |
| Cached input | $0.4 | $0.15 |
| Provider | OpenAI | Meta |
| Release date | 2026-07-09 | 2026-09-02 |
| Overall rank | #11 | #9 |
| Coding rank | #9 | — |
| Reasoning rank | #5 | #18 |
| Knowledge rank | #8 | — |
| Professional work rank | #24 | #28 |
| Verified | 2026-10-19 | 2026-10-19 |
| Price source | Price source | Price source |
Cost per request by usage
Without cache discounts or batch pricing.
| Usage | GPT-5.6 Sol | Muse Spark 1.3 | Difference |
|---|---|---|---|
| Chat message1K in / 500 out | $0.014$14 per 1,000 | $0.00337$3.38 per 1,000 | Muse Spark 1.3 is 4.1× cheaper |
| Long document100K in / 2K out | $0.44$440 per 1,000 | $0.13$133.5 per 1,000 | Muse Spark 1.3 is 3.3× cheaper |
| Agent session500K in / 50K out | $3$3,000 per 1,000 | $0.84$837.5 per 1,000 | Muse Spark 1.3 is 3.6× cheaper |
More price comparisons
GPT-5.6 Sol vs other models
- GPT-5.6 Sol vs Claude Opus 5.5
- GPT-5.6 Sol vs GPT-6 Astra
- GPT-5.6 Sol vs Gemini 4 Argon
- GPT-5.6 Sol vs Claude Fable 5.1
- GPT-5.6 Sol vs Claude Fable 5
- GPT-5.6 Sol vs GPT-6.1 Sol
- GPT-5.6 Sol vs Claude Opus 5
- GPT-5.6 Sol vs Claude Sonnet 5.5
- GPT-5.6 Sol vs GPT-6 Sol
- GPT-5.6 Sol vs Grok 4.7
- GPT-5.6 Sol vs MiMo V 2.6 Pro
- GPT-5.6 Sol vs Qwen3.8 Max
- GPT-5.6 Sol vs GLM-5.3
Muse Spark 1.3 vs other models
- Muse Spark 1.3 vs Claude Opus 5.5
- Muse Spark 1.3 vs GPT-6 Astra
- Muse Spark 1.3 vs Gemini 4 Argon
- Muse Spark 1.3 vs Claude Fable 5.1
- Muse Spark 1.3 vs Claude Fable 5
- Muse Spark 1.3 vs GPT-6.1 Sol
- Muse Spark 1.3 vs Claude Opus 5
- Muse Spark 1.3 vs Claude Sonnet 5.5
- Muse Spark 1.3 vs GPT-6 Sol
- Muse Spark 1.3 vs Grok 4.7
- Muse Spark 1.3 vs MiMo V 2.6 Pro
- Muse Spark 1.3 vs Qwen3.8 Max
- Muse Spark 1.3 vs GLM-5.3