Claude Haiku 5.5 vs Muse Spark 1.2
Claude Haiku 5.5 and Muse Spark 1.2 are closely matched at 50.3 and 37.9 on the LLM Stats Score. Claude Haiku 5.5 is 10.0x cheaper per token.
Anthropic · Meta · Updated for 2026
Which is better?
Claude Haiku 5.5 and Muse Spark 1.2 are closely matched on the overall LLM Stats Score at 50.3 and 37.9.
On price, Claude Haiku 5.5 is roughly 10.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Muse Spark 1.2 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Haiku 5.5
- cost matters — it's about 10.0x cheaper per token
- you want the most recent training data — it shipped Oct 2026
Choose Muse Spark 1.2
- you process long inputs — it offers a 1,048,576 token context window
At a glance
The differences that matter most.
Individual benchmarks
36 reported for Claude Haiku 5.5 · 3 for Muse Spark 1.2
Claude Haiku 5.5 and Muse Spark 1.2don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Haiku 5.5 ($0.10/1M tokens) is 12.5x cheaper than Muse Spark 1.2 ($1.25/1M tokens).
For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 8.5x cheaper than Muse Spark 1.2 ($4.25/1M tokens).
In conclusion, Muse Spark 1.2 is more expensive than Claude Haiku 5.5.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Muse Spark 1.2 accepts 1,048,576 input tokens compared to Claude Haiku 5.5's 1,000,000 tokens. Muse Spark 1.2 can generate longer responses up to 131,072 tokens, while Claude Haiku 5.5 is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Haiku 5.5 and Muse Spark 1.2 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Haiku 5.5
Muse Spark 1.2
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude Haiku 5.5 was released on 2026-10-07, while Muse Spark 1.2 was released on 2026-08-05.
Claude Haiku 5.5 is 2 months newer than Muse Spark 1.2.
Oct 7, 2026
0 days ago
2mo newerAug 5, 2026
2 months ago
Knowledge Cutoff
When training data ends
Claude Haiku 5.5 has a documented knowledge cutoff of 2026-06-01, while Muse Spark 1.2's cutoff date is not specified.
We can confirm Claude Haiku 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Muse Spark 1.2's cutoff date.
Jun 2026
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Provider Availability
Claude Haiku 5.5 is available from Anthropic. Muse Spark 1.2 is available from Meta Model API.
Claude Haiku 5.5
Muse Spark 1.2
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Haiku 5.5 and Muse Spark 1.2 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Haiku 5.5 vs Muse Spark 1.2.