As of August 20, 2026, Kimi K2.5 is 33% cheaper per million tokens than Muse Spark 1.2. Kimi K2.5 is $0.59 / $3.09 per million input/output tokens versus Muse Spark 1.2 at $1.25 / $4.25. Sources: https://platform.kimi.com/docs/pricing/chat and https://llama.meta.com/
Sources: Moonshot AI pricing (https://platform.kimi.com/docs/pricing/chat); Meta pricing (https://llama.meta.com/)
Kimi K2.5
Moonshot AI
Input
$0.59
Output
$3.09
Muse Spark 1.2
Meta
Input
$1.25
Output
$4.25
Token pricing, specs, and benchmarks side by side
Kimi K2.5Muse Spark 1.2Verdict
Kimi K2.5 offers significantly lower pricing, while Muse Spark 1.2 leads on benchmark performance. Your choice depends on whether cost efficiency or raw capability matters more for your use case.
As of August 20, 2026, Kimi K2.5 is 33% cheaper on blended LLM API pricing. Kimi K2.5 costs $0.59 per million input tokens and $3.09 per million output tokens ($3.68 blended 1M-in + 1M-out). Muse Spark 1.2 costs $1.25 / $4.25 per million tokens ($5.50 blended). Sources: https://platform.kimi.com/docs/pricing/chat and https://llama.meta.com/. The cheapest LLM for your app still depends on how many output tokens you generate.
Kimi K2.5 Moonshot AI API pricing is $0.59 input and $3.09 output per million tokens via Moonshot AI. Muse Spark 1.2 Meta API pricing is $1.25 input and $4.25 output per million tokens via Meta. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.
Muse Spark 1.2 leads on SWE-bench Verified: Kimi K2.5 at 76.8% vs Muse Spark 1.2 at 86.6%. SWE-bench measures real GitHub fixes; LiveCodeBench measures contest programming.
Kimi K2.5 supports a 262K token context window, while Muse Spark 1.2 supports 1M tokens. Muse Spark 1.2 offers a larger context window. Filling a larger window bills more input tokens, so the cheaper-per-million model can still cost more on long documents.
Muse Spark 1.2 leads on 3 of 3 shared benchmarks versus Kimi K2.5's 0 wins. Check the comparison table for GPQA Diamond, SWE-bench, MMLU, HLE, and the other evals we track. Token price and benchmark score together are the usual LLM comparison, not either number alone.
Both Kimi K2.5 and Muse Spark 1.2 are production API models. For cost-sensitive production traffic, Kimi K2.5 has better economics on the blended 1M-in + 1M-out scale. For maximum capability, weight the benchmark table for your domain. Many production stacks route cheap models for drafts and a frontier model for the hard turn, which is usually cheaper than sending everything to the expensive API.
Yes. Call Kimi K2.5 through Moonshot AI and Muse Spark 1.2 through Meta with separate API keys, or through a gateway that already wraps both. Keep prompts in tokens, not characters, when you estimate the invoice. AnotherWrapper templates can swap providers without rewriting auth and billing.
List rates are the latest published Moonshot AI API pricing and Meta API pricing, quoted per million tokens. Official rate sheets: https://platform.kimi.com/docs/pricing/chat and https://llama.meta.com/. Prompt caching, batch APIs, and committed-use discounts can change the invoice. Benchmark scores are from official publications and independent evals, updated as new numbers land.
Kimi K2.5 supports up to 262K output tokens per request, while Muse Spark 1.2 supports up to 131K output tokens. Output tokens are usually the expensive half of API pricing, so a higher max output cap is a capability, not a discount.
Muse Spark 1.2 has a measured throughput of approximately 22.636101613788817 tokens/second. Throughput data for Kimi K2.5 is not yet available. Throughput (tokens per second) and time-to-first-token are why two models with the same per-million-token price can still feel different in chat and agents.
Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open Kimi K2.5 or Muse Spark 1.2 from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.
This comparison covers API pricing, context window, throughput, and benchmark scores. Kimi K2.5 costs $0.59/M input and $3.09/M output. Muse Spark 1.2 costs $1.25/M input and $4.25/M output.
Rank both on the LLM leaderboard, SWE-bench, and Humanity's Last Exam.
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