GLM 5.3 vs GPT-5.6 Sol
API pricing, context window and capabilities for GLM 5.3 and GPT-5.6 Sol, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGLM 5.3 wins on price. GPT-5.6 Sol wins on Terminal-Bench, on intelligence and on context window.
Price
GLM 5.3
Terminal-Bench
GPT-5.6 Sol
Intelligence
GPT-5.6 Sol
Context window
GPT-5.6 Sol
Key takeaways
who wins on what, from the published numbersGLM 5.3 wins
- Cheaper input ($0.079 vs $2.00 /1M)
- Cheaper output ($3.08 vs $10.00 /1M)
- Higher max output (1M vs 128K)
- More serving providers (16 vs 6)
GPT-5.6 Sol wins
- Larger context window (1M vs 1.1M)
- Has web search
Cheaper overall
GLM 5.3
$0.079 + $3.08 /1M
Larger context
GPT-5.6 Sol
1.1M
More providers
GLM 5.3
16 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower. An OpenRouter routed quote is the price of whichever upstream provider OpenRouter prefers today, so it moves day to day.
| GLM 5.3 | GPT-5.6 Sol | |
|---|---|---|
| Input $/1M | $0.079OpenRouter routed quote best | $2.00OpenRouter routed quote |
| Output $/1M | $3.08via Sail best | $10.00OpenRouter routed quote |
| Context window | 1M | 1.1M best |
| Max output | 1M best | 128K |
| Serving providers | 16 best | 6 |
| Date | Released Aug 14, 2026 | Released Jul 9, 2026 |
Benchmarks
Benchmark scores, side by side| GLM 5.3 | GPT-5.6 Sol | |
|---|---|---|
| Intelligence | 44.8 | 47.0 best |
| Terminal-Bench | 84% | 90% best |
| GPQA Diamond | 92% | 94% best |
| Output speed | 62 t/s | 94 t/s best |
| Latency (TTFT) | 3.50s best | 138.40s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GLM 5.3
via OpenRouter
$5.20
GPT-5.6 Sol
via OpenRouter
$20
Capabilities
feature support, side by side| Feature | GLM 5.3 | GPT-5.6 Sol |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, GLM 5.3 or GPT-5.6 Sol?
GLM 5.3 is cheaper for input ($0.079 vs $2.00 per 1M tokens) as an OpenRouter routed quote. GLM 5.3 is cheaper for output ($3.08 vs $10.00 per 1M tokens) from Sail.
What is the context window difference between GLM 5.3 and GPT-5.6 Sol?
GLM 5.3 has a 1M-token context window and GPT-5.6 Sol has 1.1M tokens, so GPT-5.6 Sol can take a larger prompt.
How do GLM 5.3 and GPT-5.6 Sol compare on benchmarks?
On the tracked benchmarks, GPT-5.6 Sol leads on Terminal-Bench, and GPT-5.6 Sol leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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