Standard Compute
Model comparison 2026

Devstral 2 vs Muse Spark Open

Devstral 2
Mistral · Balanced · Open weights
$0.88/1M · 262K ctx
Muse Spark Open
Meta · Balanced · Open weights
$2.15/1M · 1.0M ctx

Community vote

Pick a winner in each dimension. You can change your vote any time.

Output Quality

Correctness and depth of what it produces

Agentic Ability

Tool calls, instruction-following, and multi-step tasks

Speed

Tokens per second and time-to-first-token

Value for Money

How much capability you get per dollar

Reliability

Consistent results: fewer refusals, loops and format breaks

Specs and pricing side by side

Spec
Devstral 2
Muse Spark Open
Maker
Mistral
Meta
Blended price / 1M
$0.88
$2.15
Input / output
$0.40 in · $2.00 out / 1M tokens
$1.25 in · $4.25 out / 1M tokens
Context window
262K
1.0M
Open weights
Yes
Yes
Tool use
Yes
Yes
Reasoning
No
Yes
Output Quality
3.3
7.0
Agentic Ability
4.4
5.0
Speed
8.2
7.0
Value for Money
5.7
5.3
Reliability
8.4
8.0

Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).

Verdict: Devstral 2 or Muse Spark Open?

Updated 2026-10-16

Choose Devstral 2 if you want coding agents that need a Mistral open-weight model. Choose Muse Spark Open if you want trying Meta's open-weight coding model through OpenRouter, or self-hosting it where code must stay on your own hardware.

In our editorial scoring, Devstral 2 leads in 3 of five dimensions (speed, value for money and reliability), while Muse Spark Open leads in 2. On price, Devstral 2 runs about $0.88 per 1M tokens (blended) and is open-weight; Muse Spark Open is about $2.15 and open-weight.

Where Devstral 2 falls short
  • 0% in Artificial Analysis's Terminal-Bench 4.0 run
  • 262K context, smaller than 11.7% of the coding-agent requests we measured
Full Devstral 2 breakdown →
Where Muse Spark Open falls short
  • No independent agent benchmark results yet; the published figures are Meta's own
  • Self-hosting needs at least 700 GB of GPU memory in NVFP4 (2 TB in BF16), per Meta's model card
Full Muse Spark Open breakdown →

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