Curated models for your best work

Muse Spark 1.3

Vision
Tool calling
Reasoning
Streaming
1.05M context

Model id

meta/muse-spark-1.3

API Try this model

Context window: 1.05M; tokens
Input price: $1.25; per 1M tokens
Output price: $4.25; per 1M tokens
Max output: Provider; no narrower limit

Provider list price

Pricing

USD / 1M tokens

Input	$1.25 / M tokens
Output	$4.25 / M tokens
Cache read	$0.15 / M tokens
Context window	1.05M tokens
Routing	Free

Provider list price. BYOK bills your provider; managed credits draw down at these rates. No markup or request fee. Every request is metered per engineer and joined to shipped work.

Registry 2026-09-29.1 · effective 9/17/2026 · Meta Model API pricing

Registry contract

Capabilities

meta/muse-spark-1.3

Protocols: 3; Chat · Responses · Messages · streaming
Tools: 1; Chat
JSON Schema: None; Not supported
Vision: Yes; Chat · Responses · Messages
Reasoning: 1; Chat
Output limit: Provider; No narrower TokenSpend limit

canonical meta/muse-spark-1.3 · revision meta/muse-spark-1.3 · aliases muse-spark-1.3

First request

Run it

Python · TokenSpend SDK

from tokenspend import TokenSpend

client = TokenSpend()
resp = client.chat.completions.create(
    model="meta/muse-spark-1.3",
    messages=[{"role": "user", "content": "hello"}],
)

TypeScript · TokenSpend SDK

import { TokenSpend } from "@tokenspend/sdk";

const client = new TokenSpend();
const resp = await client.chat.completions.create({
  model: "meta/muse-spark-1.3",
  messages: [{ role: "user", content: "hello" }]
});

curl

curl https://api.tokenspend.dev/v1/chat/completions \
  -H "content-type: application/json" \
  -H "Authorization: Bearer $TOKENSPEND_API_KEY" \
  -d '{"model":"meta/muse-spark-1.3","messages":[{"role":"user","content":"hello"}]}'

Claude Code integration

export ANTHROPIC_BASE_URL=https://api.tokenspend.dev
export ANTHROPIC_API_KEY=$TOKENSPEND_API_KEY
export ANTHROPIC_MODEL=meta/muse-spark-1.3

One request shape reaches every model. Claude Code connects as an integration with two environment variables. TokenSpend never stores prompts or responses.

Questions

How much does Muse Spark 1.3 cost?

$1.25 per 1M input tokens and $4.25 per 1M output tokens, at provider list price. TokenSpend adds no markup or request fee. Managed credits carry a 5% fee when you buy them.

What is the context window of Muse Spark 1.3?

Muse Spark 1.3 has a 1.05M token context window.

Does Muse Spark 1.3 support tool calling?

Yes. Tool calling is supported on Chat.

Does Muse Spark 1.3 support images?

Yes. Image input is supported on Chat, Messages.

Does Muse Spark 1.3 support reasoning?

Yes. Reasoning control is supported on Chat.

Does Muse Spark 1.3 have prompt caching?

Yes. Cache reads cost $0.15 per 1M tokens.

When were these prices last checked?

Prices follow rate card 2026-09-29.1, effective 9/17/2026. Source: Meta Model API pricing.