Claude Sonnet 5 Paid vs 
Solar Pro 3 Paid
Claude Sonnet 5 vs Solar Pro 3 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Claude Sonnet 5 — full profile › · Solar Pro 3 — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$10 /M outputManaged API (no infra to run)
$0.6 /M outputManaged API (no infra to run)
Claude Sonnet 5 vs Solar Pro 3 specs
| Spec | Claude Sonnet 5 | Solar Pro 3 | Winner |
|---|---|---|---|
| Maker | Anthropic | Upstage | – |
| Type | Proprietary | Proprietary | – |
| Context window | 1M tokens | 131K tokens | |
| Input price | $2/M | $0.15/M | |
| Output price | $10/M | $0.6/M | |
| Vision / multimodal | Yes | No | |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Price gap & when to choose each
Solar Pro 3 is ~17× cheaper than Claude Sonnet 5 on output tokens ($0.6 vs $10 per M tokens).
- You want frontier performance through a managed API
- You need the longer 1M context window
- You value reliability & ecosystem
- You don't want to manage infrastructure
- You want frontier performance through a managed API
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | Claude Sonnet 5 | Solar Pro 3 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✗ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✗ |
Benchmarks: Claude Sonnet 5 vs Solar Pro 3
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Claude Sonnet 5 and Solar Pro 3 score
| Criterion | Claude Sonnet 5 | Solar Pro 3 |
|---|---|---|
| Cost-efficiency | 3.5 | 5.0 |
| Context window | 5.0 | 3.5 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 5.0 | 3.5 |
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
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,...
Solar Pro 3 Paid
Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward pass, it delivers exceptional performance while maintaining computational efficiency. Optimized...
Other models in these families
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Frequently asked questions
Claude Sonnet 5 vs Solar Pro 3 — which is cheaper?
Solar Pro 3 is cheaper on output ($0.6/M vs $10/M).
Which has the larger context window?
Claude Sonnet 5 offers the larger context window (1M tokens).
Claude Sonnet 5 vs Solar Pro 3 — which should I pick in 2026?
Choose Solar Pro 3 for the lower output price ($0.6/M vs $10/M). Choose Claude Sonnet 5 if you need the larger 1M context window.
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