GLM-5.3 vs Solar Pro 4
GLM-5.3 significantly outperforms across most benchmarks. Solar Pro 4 is 4.1x cheaper per token.
Zhipu AI · Upstage · Updated for 2026
Which is better?
GLM-5.3 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Solar Pro 4 is better at 0 benchmarks. GLM-5.3 significantly outperforms across most benchmarks.
On price, Solar Pro 4 is roughly 4.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GLM-5.3 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GLM-5.3
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Aug 2026
Choose Solar Pro 4
- cost matters — it's about 4.1x cheaper per token
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GLM-5.3 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Solar Pro 4 is better at 0 benchmarks.
GLM-5.3 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GLM-5.3 ($1.40/1M tokens) is 4.7x more expensive than Solar Pro 4 ($0.30/1M tokens).
For output processing, GLM-5.3 ($4.40/1M tokens) is 3.7x more expensive than Solar Pro 4 ($1.20/1M tokens).
In conclusion, GLM-5.3 is more expensive than Solar Pro 4.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GLM-5.3 accepts 1,000,000 input tokens compared to Solar Pro 4's 524,288 tokens. Solar Pro 4 can generate longer responses up to 131,072 tokens, while GLM-5.3 is limited to 128,000 tokens.
Release Timeline
When each model was launched
GLM-5.3 was released on 2026-08-14, while Solar Pro 4 was released on 2026-08-06.
GLM-5.3 is 0 month newer than Solar Pro 4.
Aug 14, 2026
1 weeks ago
1w newerAug 6, 2026
2 weeks ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GLM-5.3 is available from ZAI. Solar Pro 4 is available from Upstage.
GLM-5.3
Solar Pro 4
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-5.3 and Solar Pro 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-5.3 vs Solar Pro 4.