GLM-5.2 Alternatives
What is the best alternative to GLM-5.2?
The closest alternative to GLM-5.2 (Z.ai, $2.15/M blended) is Grok 4.3, from xAI, a config migration priced -27.3% relative to GLM-5.2 at blended (3:1) rates. There is no meaningful parity loss on this swap.
The closest match to GLM-5.2 (Z.ai, $2.15/M) is Grok 4.3 — a config migration at -27.3% price.
Ranked — top 8 alternatives
| # | Model | Provider | Effort | $/M (Δ%) | tok/s (Δ%) | Context | Parity | Closeness |
|---|---|---|---|---|---|---|---|---|
| 1 | Grok 4.3 | xAI | config | $1.56 (-27.3%) | — | 0K | 100% | 92 |
| 2 | Grok-4.20 Reasoning | xAI | config | $3.00 (+39.5%) | — | 0K | 100% | 90 |
| 3 | Gemini 3.6 Flash | code-change | $3.38 (+57%) | — | 0K | 100% | 79 | |
| 4 | Gemini 3.1 Pro | code-change | $4.50 (+109.3%) | — | +1M | 100% | 77 | |
| 5 | GPT-OSS 20B | Groq | config | $0.13 (-93.9%) | — | -869K | 50% | 72 |
| 6 | GPT-OSS 120B | Groq | config | $0.26 (-87.8%) | — | -869K | 50% | 72 |
| 7 | GPT-OSS 120B (Cerebras) | Cerebras | config | $0.45 (-79.1%) | — | -869K | 50% | 72 |
| 8 | DeepSeek V4 Pro | DeepSeek | config | $0.54 (-74.7%) | — | -872K | 50% | 72 |
Top 3, in detail
Keep the `openai` SDK; change `baseURL` and the API key.
base_url: https://api.z.ai/api/paas/v4 auth: Bearer API key
base_url: https://api.x.ai/v1 auth: Bearer API key sdk: openai model: "grok-4.3"
Keep the `openai` SDK; change `baseURL` and the API key.
base_url: https://api.z.ai/api/paas/v4 auth: Bearer API key
base_url: https://api.x.ai/v1 auth: Bearer API key sdk: openai model: "grok-4.20-0309-reasoning"
contents/parts structure instead of messages; an OpenAI-compatible endpoint exists but only covers a subset of parameters.
base_url: https://api.z.ai/api/paas/v4 auth: Bearer API key
base_url: https://generativelanguage.googleapis.com/v1beta auth: API key (header or query param); OAuth/service-account on Vertex AI sdk: @google/genai model: "gemini-3.6-flash"
Or don't migrate at all
One base URL, one key, change the model string — every alternative above is already callable through All AI Ask.
curl https://allaiask.com/api/v1/chat \
-H "Authorization: Bearer $ALLAIASK_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "grok-4.3", "messages": [{"role": "user", "content": "Hello"}]}'Related
FAQ
What is the closest alternative to GLM-5.2?
Grok 4.3 is the closest match: config migration, -27.3% price, no significant parity loss.
Can I switch off GLM-5.2 without changing my code?
Only if you stay on Z.ai. Every cross-provider option requires at least a config change (new base URL and key); some need a code change or a full rewrite — see the effort column below.
What do I lose switching from GLM-5.2?
Against the closest match, Grok 4.3, we found no significant parity gap on the dimensions we track.
Prices and specs verified 2026-08-08.