text model comparison
Nemotron 3.5 Lightning vs Solar Pro 4
Nemotron 3.5 Lightning and Solar Pro 4 are both current text models, from NVIDIA and Upstage. On Arena Text, Nemotron 3.5 Lightning scores 1349 Elo and Solar Pro 4 1386 Elo (Arena, measured October 8, 2026). Nemotron 3.5 Lightning has the larger context window, 1,000,000 vs 512,000 tokens.
- Higher Arena Text
- Solar Pro 41386 Elo against 1349 Elo
- Longer context window
- Nemotron 3.5 Lightning1M tokens against 512K tokens
- Newer release
- Nemotron 3.5 LightningAug 2026 against Aug 2026
Data verified October 13, 2026 · Dataset 2026-10-29
Side by side
Nemotron 3.5 Lightning and Solar Pro 4, line by line
Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.
| Fact | Nemotron 3.5 Lightning | Solar Pro 4 |
|---|---|---|
| Price | ||
| Price per 1M input tokens | Not listed | $0.30 |
| Price per 1M output tokens | Not listed | $1.20 |
| Independent benchmarks | ||
| Arena Text | 1349 Elo (#45 of 47) | 1386 Elo (#43 of 47) (better) |
| Specs | ||
| Provider | NVIDIA | Upstage |
| Release date | August 11, 2026 | August 6, 2026 |
| Access | open weights | API only |
| Context window | 1,000,000 tokens | 512,000 tokens |
| Max output | Not reported | 128,000 tokens |
| Input | text | text |
| Output | text | text |
Scores:Arena · 2026-10-12
Charts
Against every current text model
Where Nemotron 3.5 Lightning and Solar Pro 4 land among the current models of their task, on every independent benchmark, on price and on context.
Where each stands
On Arena Text, Nemotron 3.5 Lightning ranks #45 and Solar Pro 4 #43 of 47 current models. Each bar is the share of current models it beats: on score, price and context.
Independent benchmarks
Arena Text
Nemotron 3.5 Lightning:#45of 47
1,349 Elo · ahead of 4%
Solar Pro 4:#43of 47
1,386 Elo · ahead of 9%
Price and context
Price per 1M input tokens
Nemotron 3.5 Lightning: Not listed
Solar Pro 4:#11of 51
$0.30 · cheaper than 76%
Price per 1M output tokens
Nemotron 3.5 Lightning: Not listed
Solar Pro 4:#10of 51
$1.20 · cheaper than 78%
Context window
Nemotron 3.5 Lightning:#26of 64
1M tokens · longer than 22%
Solar Pro 4:#51of 64
512K tokens · longer than 21%
Quality against price
Solar Pro 4 scores 1,386 at $0.525 (blended price per 1M tokens). The line joins the current models no other beats on both price and Arena Text score; hover any point to name it.
Quality against price: the data
| Model | Provider | Blended price per 1M tokens | Arena Text (Elo) |
|---|---|---|---|
| Gemini 4 Argon | $4 | 1,525 | |
| Claude Opus 5.5 | Anthropic | $8 | 1,507 |
| Claude Fable 5 | Anthropic | $20 | 1,504 |
| Claude Fable 5.1 | Anthropic | $20 | 1,501 |
| Gemini 3.8 Flash | $1.50 | 1,497 | |
| Muse Spark 1.3 | Meta | $2 | 1,494 |
| Claude Opus 5 | Anthropic | $10 | 1,490 |
| Kimi K3 | Moonshot Kimi | $6 | 1,488 |
| GPT-5.6 Sol | OpenAI | $8 | 1,485 |
| GPT-6.1 Sol | OpenAI | $4 | 1,484 |
| Qwen3.8-Max | Alibaba Qwen | $3 | 1,483 |
| GPT-5.5 | OpenAI | $11 | 1,482 |
| Gemini 3.6 Flash | $3 | 1,482 | |
| Claude Opus 4.8 | Anthropic | $10 | 1,481 |
| MiMo-V2.6-Pro | Xiaomi MiMo | $0.54 | 1,480 |
| GLM-5.3 | Z.ai | $2.15 | 1,478 |
| Claude Sonnet 5.5 | Anthropic | $4 | 1,476 |
| GPT-5.4 | OpenAI | $5.63 | 1,475 |
| GPT-6 Astra | OpenAI | $20 | 1,475 |
| DeepSeek-V4.1-Flash | DeepSeek | $0.52 | 1,475 |
| GLM-5.3-Flash | Z.ai | $0.24 | 1,475 |
| Gemini 3 Flash Preview | $1.13 | 1,473 | |
| Grok 4.20 | xAI | $1.56 | 1,472 |
| GPT-5.6 Terra | OpenAI | $4.50 | 1,466 |
| Grok 4.5 | xAI | $3 | 1,466 |
| DeepSeek-V4-Pro | DeepSeek | $1.98 | 1,465 |
| Claude Sonnet 5 | Anthropic | $4 | 1,461 |
| GPT-6 Sol | OpenAI | $4 | 1,456 |
| Gemini 3.5 Flash-Lite | $0.85 | 1,455 | |
| Grok 4.6 | xAI | $3 | 1,454 |
| GPT-5.6 Luna | OpenAI | $0.45 | 1,452 |
| MiMo-V2.6-Flash | Xiaomi MiMo | $0.18 | 1,451 |
| GPT-6 Luna | OpenAI | $0.20 | 1,443 |
| Grok 4.7 | xAI | $3 | 1,443 |
| Grok 4.3 | xAI | $1.56 | 1,442 |
| Mistral Large 4 | Mistral AI | $2.06 | 1,429 |
| GPT-4.1 | OpenAI | $3.50 | 1,415 |
| Solar Pro 4 | Upstage | $0.52 | 1,386 |
| GPT-4.1 mini | OpenAI | $0.70 | 1,383 |
| GPT-4.1 nano | OpenAI | $0.18 | 1,322 |
Cost
What each costs
Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.
| Workload or rate | Nemotron 3.5 Lightning | Solar Pro 4 |
|---|---|---|
| Other listed rates | ||
| 1M input tokens, cached | Not listed | $0.06 |
Verdict
When to choose each
Nemotron 3.5 Lightning
Where it leads
- Larger context window 1,000,000 vs 512,000 tokens
- Open weights you can run yourself
Best for
- Fast, low-cost agent subtasks such as tool calls
- Self-hosted agents on one GPU
Watch out for
- On NVIDIA's own table it trails Qwen 3.6 35B A3B on SWE-bench Verified (51.56 against 70.12)
- NVIDIA sells no per-token API for it; hosted prices come from third parties
Solar Pro 4
Where it leads
- Higher Arena Text score, 1386 Elo vs 1349 Elo
- A cached-input rate, $0.06 per 1M tokens
Best for
- Korean and Japanese enterprise workloads
- Multi-step agent work with tool calls
Watch out for
- A closed model: Upstage does not disclose its parameter count
- Several of its published benchmark figures are in-house evaluations
From benchmark to production
Building on Nemotron 3.5 Lightning or Solar Pro 4?
Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.
FAQ
Nemotron 3.5 Lightning vs Solar Pro 4 FAQ
Do Nemotron 3.5 Lightning and Solar Pro 4 discount cached input?
Solar Pro 4 lists a cached-input rate of $0.06 per 1M tokens, 80% below its standard input rate. No cached-input rate is listed for Nemotron 3.5 Lightning.
Which scores higher on independent benchmarks, Nemotron 3.5 Lightning or Solar Pro 4?
Solar Pro 4 leads on Arena Text, 1386 Elo to 1349 Elo. Scores are independent evaluations, not either vendor's launch figures.
Which has the larger context window, Nemotron 3.5 Lightning or Solar Pro 4?
Nemotron 3.5 Lightning has the larger context window, 1,000,000 vs 512,000 tokens.
Can I run Nemotron 3.5 Lightning or Solar Pro 4 myself?
Nemotron 3.5 Lightning is released as open weights you can run yourself; Solar Pro 4 is available through its provider's API only.
Further reading
More on Nemotron 3.5 Lightning and Solar Pro 4
Related comparisons
- DeepSeek-V4-Pro vs Nemotron 3.5 Lightning
- GPT-6 Luna vs Solar Pro 4
- Gemini 3.7 Flash vs Nemotron 3.5 Lightning
- DeepSeek-V4.1-Flash vs Solar Pro 4
- Grok 4.6 vs Nemotron 3.5 Lightning
- Muse Glimmer vs Solar Pro 4
- Muse Glimmer vs Nemotron 3.5 Lightning
- Gemini 3.5 Flash-Lite vs Solar Pro 4
- GPT-4.1 mini vs Solar Pro 4
Production evaluation
Choosing between Nemotron 3.5 Lightning and Solar Pro 4?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty