Standard Compute
Model comparison 2026

Claude Sonnet 5.5 vs MiniMax M2.1

Claude Sonnet 5.5
Anthropic · Balanced · Proprietary
$4.40/1M · 1M ctx
MiniMax M2.1
MiniMax · Balanced · Open weights
$0.57/1M · 205K 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
Sonnet 5.5
MiniMax M2.1
Maker
Anthropic
MiniMax
Blended price / 1M
$4.40
$0.57
Input / output
$2.00 in · $10 out / 1M tokens
$0.30 in · $1.20 out / 1M tokens
Context window
1M
205K
Open weights
No
Yes
Tool use
Yes
Yes
Reasoning
Yes
Yes
Output Quality
9.8
7.8
Agentic Ability
9.8
8.1
Speed
8.4
8.0
Value for money
8.8
9.5
Reliability
9.4
8.3

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

Verdict: Sonnet 5.5 or MiniMax M2.1?

Updated 2026-10-13

Choose Claude Sonnet 5.5 if you want the everyday default for coding agents, escalating to Opus 5.5 only for the hardest tasks. Choose MiniMax M2.1 if you want tool-heavy personal and autonomous agents on a budget.

In our editorial scoring, Claude Sonnet 5.5 leads in 4 of five dimensions (output quality, agentic ability, speed and reliability), while MiniMax M2.1 leads in 1. On price, Claude Sonnet 5.5 runs about $4.40 per 1M tokens (blended) and is proprietary; MiniMax M2.1 is about $0.57 and open-weight.

Where Sonnet 5.5 falls short
  • Artificial Analysis flags it as very verbose, which adds output tokens
  • Released September 2026, so its long-run track record is still short
Full Sonnet 5.5 breakdown →
Where MiniMax M2.1 falls short
  • Shorter context than M3
  • Behind frontier on quality
Full MiniMax M2.1 breakdown →

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