Hy3 Open vs 
Claude Sonnet 5 Paid
Hy3 vs Claude Sonnet 5 compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.
Claude Sonnet 5 — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
Hy3 vs Claude Sonnet 5 specs
| Spec | Hy3 | Claude Sonnet 5 |
|---|---|---|
| Maker | Tencent | Anthropic |
| Type | Open-weight | Proprietary |
| Context window | 262K tokens | 1M tokens |
| Input price | $0.13/M · free self-host | $2/M |
| Output price | $0.53/M · free self-host | $10/M |
| Vision / multimodal | No | Yes |
| Tool / function calling | Yes | Yes |
| Self-hostable | Yes | No (API only) |
| License | Open weights | Proprietary |
Feature comparison
| Capability | Hy3 | Claude Sonnet 5 |
|---|---|---|
| Open weights (downloadable) | ✓ | ✗ |
| Self-hostable | ✓ | ✗ |
| Runs fully offline | ✓ | ✗ |
| Vision / multimodal | ✗ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✗ | ✓ |
Benchmarks: Hy3 vs Claude Sonnet 5
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Hy3 and Claude Sonnet 5 score
| Criterion | Hy3 | Claude Sonnet 5 |
|---|---|---|
| Cost-efficiency | 5.0 | 3.5 |
| Context window | 4.0 | 5.0 |
| Openness | 5.0 | 1.5 |
| Self-hosting | 5.0 | 1.0 |
| Multimodality | 3.5 | 5.0 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
What each model is
Hy3 Open
Hy3 is a 295B-parameter Mixture-of-Experts model from Tencent (21B active, 192 experts with top-8 routing) built for reasoning, agentic workflows, and real-world production use. It supports a configurable reasoning effort:...
Claude Sonnet 5 Paid
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
Other models in these families
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Frequently asked questions
Is Hy3 as good as Claude Sonnet 5?
Hy3 is open-weight and competitive on many tasks, but Claude Sonnet 5 may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.
Can I run Hy3 locally?
Yes. Hy3 has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. Claude Sonnet 5 is API-only and cannot be self-hosted.
How much cheaper is Hy3?
Hy3 costs $0.53/M output vs $10/M for Claude Sonnet 5 — roughly 19x cheaper via API, and free if you self-host.
Hy3 vs Claude Sonnet 5 — which should I pick in 2026?
Choose Hy3 if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Claude Sonnet 5 if you want frontier capability through a managed API with zero infrastructure to run.
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