QUICK VERDICT — AUGUST 2026
● Price: Allegretto $39/mo · Claude Pro $20/mo · Sonnet 5 API $2/M through Aug 31
● Agent Swarm: Allegretto — 50 runs, 4 concurrent. Sonnet 5 — not included.
● Browser agent: Allegretto — Kimi Claw. Sonnet 5 — not included in Pro.
● Coding agent: Allegretto — Kimi Code 5x credits. Sonnet 5 — Claude Code separate subscription.
● Writing quality: Sonnet 5 — best in class at this price, adaptive thinking, 128K output.
● Safety posture: Sonnet 5 — Anthropic FLI C+ (highest). Allegretto — Moonshot sanctions warning active.
● August 31 deadline: Sonnet 5 API moves from $2/M to $3/M — front-load API work now.
● Shared credit pool (Allegretto): Chat and coding draw from the same budget — heavy chat eats coding credits.
What Each Tier Is Designed For
Kimi Allegretto is Moonshot's mid-tier subscription designed for power users who regularly run Agent Swarm workflows, need higher Kimi Code allocations than Moderato provides, or want Kimi Claw browser automation included. As FelloAI's July 2026 pricing guide confirms, Allegretto adds 150 agent credits, 50 Agent Swarm runs with 4 concurrent subtasks, Kimi Code at 5x credits, and Kimi Claw browser control over Moderato's baseline. The critical operational note from Code Agent Swarm's plan guide: all Kimi features draw from one shared credit pool. A session-heavy day on chat reduces your Kimi Code budget.
Claude Sonnet 5 via API is at $2/$10/M input/output through August 31, 2026 — making it cheaper than Allegretto's subscription for API-first workloads until the price increase. Per Anthropic's release notes, Sonnet 5 includes adaptive thinking, 128K output, and the new tokenizer that adds 10-35% more tokens per request on code-heavy content. On Claude Pro at $20/month, Sonnet 5 is the default model with 5x the usage of Free tier, Projects, and voice with Gmail/Slack tool access.
Side by Side
| Feature | Kimi Allegretto | Claude Sonnet 5 (Pro) |
|---|
| Monthly price | $39 | $20 |
| Underlying model | Kimi K3 (SWE Marathon #1) | Claude Sonnet 5 |
| Agent Swarm | 50 runs, 4 concurrent | Not included |
| Browser agent | Kimi Claw | Not included |
| Coding agent | Kimi Code 5x | Claude Code (separate) |
| Writing quality | Strong | Best in class at this price |
| Long output | 1M context | 128K output tokens |
| Regulatory risk | Treasury sanctions warning | None |
Decision Framework
Kimi Allegretto if:
You regularly run Agent Swarm workflows, need Kimi Claw for browser automation, or consistently hit Moderato's Kimi Code limits. The $39/month is only justified if you actively use the agent features. Monitor the shared credit pool — heavy chat sessions reduce your coding headroom.
Claude Sonnet 5 if:
Writing quality, long-form analysis, and API-first workloads are your primary use. Claude Pro at $20/month gives you Sonnet 5 with Projects, voice, and Gmail/Slack integration. API at $2/M through August 31 — front-load batch jobs before the price increase. After August 31 it moves to $3/M plus tokenizer adds 10-35% more tokens on code-heavy content.
August 31 action:
If you use Sonnet 5 via API, front-load batch processing before August 31. The Kimi kimi-k2.5 and moonshot-v1 sunset also lands August 31 — if you are on legacy Kimi strings, migrate to kimi-k3 or kimi-for-coding before the same deadline.
Sources: FelloAI Kimi pricing (July 2026) · Code Agent Swarm plan guide · Anthropic Sonnet 5 release notes · Related: Kimi Allegretto vs Claude Pro → · Sonnet 5 August 31 deadline → · Kimi API sunset August 31 →