Grok 4.5 Alternatives
What is the best alternative to Grok 4.5?
The closest alternative to Grok 4.5 (xAI, $3.00/M blended) is Grok 4.3, from xAI, a drop-in migration priced -47.9% relative to Grok 4.5 at blended (3:1) rates. There is no meaningful parity loss on this swap.
The closest match to Grok 4.5 (xAI, $3.00/M) is Grok 4.3 — a drop-in migration at -47.9% price.
Ranked — top 8 alternatives
| # | Model | Provider | Effort | Blended $/M (Δ%) | tok/s (Δ%) | Context | Parity | Closeness |
|---|---|---|---|---|---|---|---|---|
| 1 | Grok 4.3 | xAI | drop-in | $1.56 (-47.9%) | — | +500K | 100% | 99 |
| 2 | Grok-4.20 Reasoning | xAI | drop-in | $3.00 (0%) | — | +500K | 100% | 97 |
| 3 | Grok 4.6 | xAI | drop-in | $3.00 (0%) | — | 0K | 100% | 97 |
| 4 | GLM-5.2 | Z.ai | config | $2.15 (-28.3%) | — | +500K | 80% | 84 |
| 5 | Gemini 3.5 Flash Lite | code-change | $0.85 (-71.7%) | — | +500K | 100% | 83 | |
| 6 | Gemini 3.7 Flash | code-change | $1.50 (-50%) | — | +549K | 100% | 82 | |
| 7 | Gemini 3.6 Flash | code-change | $3.00 (0%) | — | +500K | 100% | 81 | |
| 8 | GPT-5.6 Terra | OpenAI | config | $5.63 (+87.5%) | — | +500K | 80% | 80 |
Top 3, in detail
Same provider — change the model string, nothing else.
You gain: Context grows from 500,000 to 1,000,000 tokens.
base_url: https://api.x.ai/v1 auth: Bearer API key
base_url: https://api.x.ai/v1 auth: Bearer API key sdk: openai model: "grok-4.3"
Same provider — change the model string, nothing else.
You gain: Context grows from 500,000 to 1,000,000 tokens.
base_url: https://api.x.ai/v1 auth: Bearer API key
base_url: https://api.x.ai/v1 auth: Bearer API key sdk: openai model: "grok-4.20-0309-reasoning"
Same provider — change the model string, nothing else.
base_url: https://api.x.ai/v1 auth: Bearer API key
base_url: https://api.x.ai/v1 auth: Bearer API key sdk: openai model: "grok-4.6"
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 Grok 4.5?
Grok 4.3 is the closest match: drop-in migration, -47.9% price, no significant parity loss.
Can I switch off Grok 4.5 without changing my code?
Within xAI, Grok 4.3 is a drop-in swap — same request shape, just change the model string.
What do I lose switching from Grok 4.5?
Against the closest match, Grok 4.3, we found no significant parity gap on the dimensions we track.
Prices and specs verified 2026-08-14.