Qwen3.8 Max vs Solar Pro 4: Specs & Benchmark Comparison
Qwen3.8 Max is developed by Alibaba, while Solar Pro 4 comes from Upstage. Both were released in August 2026. Qwen3.8 Max has a published size of about 2.4 trillion parameters; Upstage has not disclosed the parameter count of Solar Pro 4.
The two models share 2 published benchmarks. Qwen3.8 Max leads on 2 of them. The widest gaps are on Terminal-Bench 2.1, where Qwen3.8 Max scores 86.6% against 57.0%; GPQA, where Qwen3.8 Max scores 92.6% against 89.0%. Averaged across everything we track, Qwen3.8 Max sits at 71.0% and Solar Pro 4 at 69.9%.
Solar Pro 4 is the cheaper API at $0.30 per million input tokens and $1.20 per million output tokens, roughly 8 times cheaper than Qwen3.8 Max at $2.50 and $6.25. Qwen3.8 Max takes the larger context window at 1M tokens, compared with 524K for Solar Pro 4. Qwen3.8 Max accepts text and images as input, while Solar Pro 4 accepts text. On tooling, only Qwen3.8 Max supports function calling and only Qwen3.8 Max offers structured output.
| Characteristic | Qwen3.8 Max | Solar Pro 4 |
|---|---|---|
| Company | Alibaba | Upstage |
| Release Date | August 2, 2026 | August 6, 2026 |
| Parameters | 2.4T | — |
| Multimodal | Yes | No |
| Context (input) | 1.0M | 524K |
| Context (output) | 131K | 131K |
| Input Price / 1M | $2.50 | $0.30 |
| Output Price / 1M | $6.25 | $1.20 |
| Average Score | 71.0% | 69.9% |
| Benchmarks | ||
| Terminal-Bench 2.1 | 86.6% | 57.0% |
| GPQA | 92.6% | 89.0% |
Visual Benchmark Comparison
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: Qwen3.8 Max — 0.7, Solar Pro 4 — 0.7.
Solar Pro 4 is 5.8x cheaper: input $0.30/1M vs $2.50/1M tokens.
Qwen3.8 Max supports a larger context: 1M vs 524K tokens.
Both models were released around the same time: 8/2/2026 and 8/6/2026.
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Frequently Asked Questions
Which is better for coding — Qwen3.8 Max or Solar Pro 4?
Which model is cheaper — Qwen3.8 Max or Solar Pro 4?
Which has a larger context window — Qwen3.8 Max or Solar Pro 4?
The Qwen3.8 Max and Solar Pro 4 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Qwen3.8 Max or Solar Pro 4 page. See also the complete list of AI model comparisons.