Grok 4.20 0309 v2 (Reasoning) API Pricing
SpaceXAI · released 2026-04-07 · merges 2 reasoning-effort tiers
Benchmarks shown for the highest-scoring reasoning tier. Merged tiers: Grok 4.20 0309 v2 (Reasoning), Grok 4.20 0309 v2 (Non-reasoning).
Pricing
0.125¢ / 1K
0.250¢ / 1K
0.156¢ / 1K
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.137¢ |
| RAG query | 4,000 in / 500 out | 0.625¢ |
| Long document summary | 50,000 in / 1,000 out | $0.0650 |
| Code review of a 2k-line file | 30,000 in / 2,000 out | $0.0425 |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $41.25 |
Cost = (input tokens ÷ 1,000,000 × $1.25) + (output tokens ÷ 1,000,000 × $2.50).
Benchmarks
#76 of 533
Similar intelligence, lower price
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Hy3-preview (Reasoning) | 22.7 | $0.10 |
| Ling 3.0 Flash | 24.9 | $0.111 |
| Ling-3.0-flash-VL | 24.6 | $0.111 |
| DeepSeek V4 Flash 0420 (Reasoning, High Effort) | 26.0 | $0.168 |
| MiMo-V2.5 | 25.2 | $0.175 |
Leaderboard neighbours
| Model | Intelligence | Blended $/1M |
|---|---|---|
| GPT-5.5 Instant (June 2026) | 26.0 | $11.25 |
| MiMo-V2.5-Pro | 26.0 | $0.544 |
| Kimi K2.7 Code | 25.8 | $1.712 |
| Grok 4.20 0309 v2 (Reasoning) | 25.7 | $1.563 |
| Hy3 | 25.3 | $0.25 |
| K2 Horizon MoVA 36B A4B | 25.3 | — |
| Grok 4.20 0309 (Reasoning) | 25.2 | $3.00 |
More from SpaceXAI
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Grok 4.7 (xhigh) | 46.4 | $3.00 |
| Grok 4.6 (high) | 44.3 | $3.00 |
| Grok 4.5 (high) | 38.8 | $3.00 |
| Grok Build 0.1 0616 | 27.2 | $1.25 |
| Grok 4.20 0309 (Reasoning) | 25.2 | $3.00 |
| Grok 4.3 (high) | 24.9 | $1.563 |
| Grok 4 | 22.5 | $6.00 |
| Grok 4.1 Fast (Reasoning) | 20.4 | — |
Count tokens & estimate cost for Grok 4.20 0309 v2 (Reasoning) See Grok 4.20 0309 v2 (Reasoning) on the leaderboard
Source: Artificial Analysis · last synced 2026-09-22
FAQ
Who develops Grok 4.20 0309 v2 (Reasoning)?
Grok 4.20 0309 v2 (Reasoning) is developed by SpaceXAI, released 2026-04-07.
How much does Grok 4.20 0309 v2 (Reasoning) cost per million tokens?
Grok 4.20 0309 v2 (Reasoning) costs $1.25 per 1M input tokens and $2.50 per 1M output tokens ($1.563 blended), per Artificial Analysis's official pricing data.
How does Grok 4.20 0309 v2 (Reasoning) rank on benchmarks?
Grok 4.20 0309 v2 (Reasoning) scores 25.7 on the Artificial Analysis Intelligence Index, ranking #76 of 533 models we track.
Is there a cheaper model with similar intelligence to Grok 4.20 0309 v2 (Reasoning)?
Yes — Hy3-preview (Reasoning) scores similar intelligence (22.7) at $0.10/1M blended, versus $1.563/1M for Grok 4.20 0309 v2 (Reasoning).
Where does this data come from?
Pricing and benchmark data for Grok 4.20 0309 v2 (Reasoning) comes from Artificial Analysis (artificialanalysis.ai), synced daily. Last synced 2026-09-22.