Migrating from grok-4-0709 to grok-4.20-0309-reasoning
What changes when you move from grok-4-0709 to grok-4.20-0309-reasoning: prices, limits, features and parameters, read from each company's own pages.
- From
- grok-4-0709
- Status
- Retired
- Shutdown
- May 15, 2026
- Time left
- —
- Status
- Active
- Shutdown
- none announced
- Time left
- —
Prices
USD per 1M tokens, standard tier| Type | grok-4-0709 | grok-4.20-0309-reasoning | Change |
|---|---|---|---|
| Input | Not published | $1.25first seen October 5, 2026 · source | — |
| Cached input | Not published | $0.20first seen October 5, 2026 · source | — |
| Output | Not published | $2.50first seen October 5, 2026 · source | — |
Other tiers, prompt-size bands and modalities are on each model's page.
Limits
TokensNeither company publishes a context window or output limit for these models.
Benchmarks
Same benchmark, source and setting on both sides| Benchmark | grok-4-0709 | grok-4.20-0309-reasoning | Change |
|---|---|---|---|
| Arena TextArena. Ranges don't overlap. | 1411 ±4 | 1472 ±4 | +61 |
| Arena Text: CodingArena. Ranges don't overlap. | 1435 ±7 | 1511 ±6 | +76 |
| Arena VisionArena. Ranges don't overlap. | 1184 ±7 | 1256 ±6 | +72 |
| GPQA DiamondEpoch AI. | 87.0% | 89.3% | +2.3 pts |
| OTIS Mock AIME 2024-2025Epoch AI. | 84.0% | 92.2% | +8.2 pts |
A score from one source is never compared with another source's, and company-reported scores are compared only within the same company; settings named where they differ. Data: Arena (arena.ai), CC BY 4.0; Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.
Features and parameters
Compare modelsNeither company publishes feature facts for these models.
Aliases
All aliasesNo aliases point at either model.
On cloud platforms
All platform dates| Model | Platform | Platform ID | Shutdown | Time left |
|---|---|---|---|---|
| grok-4-0709 | Microsoft Foundryversion 1 | grok-4 | none announcedActive | |
| grok-4.20-0309-reasoning | Microsoft Foundryversion 1 | grok-4-20-reasoning | Apr 6, 2027Active | 173 days |
Read daily from each platform's own pages. The status above uses each company's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.
Checklist
- Change the model string from
grok-4-0709togrok-4.20-0309-reasoning.
Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: grok-4-0709, grok-4.20-0309-reasoning.