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Meta: Muse Spark 1.3
Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It is designed to keep track of information across extended tasks, work through...
Specifications
| Provider | Meta |
| Model ID | meta/muse-spark-1.3 |
| Context window | 1.0M tokens (1,048,576) |
| Modalities | text + image + file + video → text |
| Tokenizer | Other |
| Router sources | OpenRouter, TrustedRouter, Vercel AI Gateway, Cloudflare |
| Released | 2026-09-02 |
| Tracked since | 2026-11-14 |
| Popularity | Not in the ranked set |
| Reasoning | Mandatory |
Pricing (per million tokens)
| Variant | Source | API ID | Input | Output | Context |
|---|---|---|---|---|---|
| standard | OpenRouter | meta/muse-spark-1.3 | $1.25 | $4.25 | 1.0M |
| standard | TrustedRouter | meta/muse-spark-1.3 | $1.32 | $4.48 | 1.0M |
| standard | Vercel AI Gateway | meta/muse-spark-1.3 | $1.25 | $4.25 | 1.0M |
| standard | Cloudflare | meta/muse-spark-1.3 | $1.25 | $4.25 | — |
Recorded price history
| Date | Input / 1M | Output / 1M | Context |
|---|---|---|---|
| 2026-11-14 | $1.25 | $4.25 | — |
| 2026-11-14 | $1.25 | $4.25 | 1.0M |
| 2026-11-14 | $1.32 | $4.48 | 1.0M |
| 2026-11-14 | $1.25 | $4.25 | 1.0M |
Capabilities
Vision (image input)Video inputFile inputAgentic tool useStructured outputsReasoning (always on)1M+ context windowControllable reasoningNo content storage (attested)Zero data retentionNo training on inputs (attested)
Trust flags come from TrustedRouter's per-provider attestations.
Supported parameters
include_reasoning, max_tokens, reasoning, reasoning_effort, repetition_penalty, response_format, seed, structured_outputs, temperature, tool_choice, tools, top_k, top_p