Anthropic
Claude Sonnet 3.7
Balanced Claude model for coding, analysis, agent workflows, and cost control
- Context
- 200K
- Max output
- 64K
- Input / 1M
- $3.00
- Output / 1M
- $15.00
- Output speed
- —
Accepts
- Text input
- Image input
- PDF input
Produces
- Text output
AI model comparison
Compare recorded price, context, output limits, speed, latency, capabilities, and input/output support. Every missing value stays visible, and unsourced benchmarks are excluded.
Claude Sonnet 3.7 and Kimi K3 both come up when teams are choosing a model for production work, and the honest answer usually depends on your workload rather than a leaderboard. This page puts their published specifications side by side — context window, token pricing, supported inputs and outputs — so you can see where they actually differ.
Anthropic
Balanced Claude model for coding, analysis, agent workflows, and cost control
Accepts
Produces
Moonshot AI
Moonshot's frontier model — 2.8 trillion parameters, a million-token window, and thinking effort you can dial up when the task deserves it.
Accepts
Produces
At a glance
This is a directional summary of the values recorded in this directory—not a universal quality verdict. Test the finalists on your own prompts before committing.
Where Claude Sonnet 3.7 leads in recorded data
No complete recorded factor currently favors this model. That does not establish lower real-world quality.
Where Kimi K3 leads in recorded data
Context capacity
Higher listed limit
Claude Sonnet 3.7:200K
Kimi K3:1.0M
Kimi K3
Maximum output
Higher listed limit
Claude Sonnet 3.7:64K
Kimi K3:131.1K
Kimi K3
Input price
Lower recorded price
Claude Sonnet 3.7:$3.00
Kimi K3:$3.00
Same recorded value
Output price
Lower recorded price
Claude Sonnet 3.7:$15.00
Kimi K3:$15.00
Same recorded value
Output speed
Higher recorded throughput
Claude Sonnet 3.7:—
Kimi K3:—
No complete comparison
Time to first token
Lower recorded latency
Claude Sonnet 3.7:—
Kimi K3:—
No complete comparison
Intelligence Index
Higher directory index
Claude Sonnet 3.7:—
Kimi K3:—
No complete comparison
Evidence
A score appears only when both records include a verified source. It is not treated as a universal ranking.
Specifications
| Specification | Claude Sonnet 3.7 | Kimi K3 |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Model family | claude-sonnet | kimi-k3 |
| Accepted inputs | text, image, pdf | text, image, video |
| Produced outputs | text | text |
| Context window | 200K | 1.0MRecorded lead |
| Max output | 64K | 131.1KRecorded lead |
| Intelligence Index | — | — |
| Input price / 1M | $3.00 | $3.00 |
| Output price / 1M | $15.00 | $15.00 |
| Output speed | — | — |
| Time to first token | — | — |
| Reasoning mode | Documented | Documented |
| Tool calling | Documented | Documented |
| Image input | Documented | Documented |
| Audio input | Not documented | Not documented |
| Structured output | Not documented | Documented |
| License | Proprietary | Open weights |
| Released | Feb 19, 2025 | Jul 16, 2026 |
Workload guidance
On the published numbers, Kimi K3 accepts the larger context window and Kimi K3 is cheaper per input token. Which matters more depends on whether your bottleneck is document size or spend — the table above has the exact figures.
Provenance
Prices and hosted performance can change. SyncDev records source references and clearly separates documented specifications from measured values; confirm commercial terms with the provider before deployment.
Claude Sonnet 3.7
Anthropic · model record and recorded source
Kimi K3
Moonshot AI · model record and recorded source
Choose any two approved model records and review them with the same evidence rules.