Grok 4.20 0309 v2 (Reasoning) API Pricing
SpaceXAI · released 2026-04-07 · merges 2 reasoning-effort tiers
Also searched as: Grok 4.20 0309 v2 pricing
Benchmarks shown for the highest-scoring reasoning tier. Merged tiers: Grok 4.20 0309 v2 (Reasoning), Grok 4.20 0309 v2 (Non-reasoning).
Grok 4.20 0309 v2 price
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
#86 of 547
Similar intelligence, lower price
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Hy3-preview (Reasoning) | 22.7 | $0.10 |
| DeepSeek V4 Flash 0420 (High) | 24.4 | $0.142 |
| Solar Mini 4 | 24.1 | $0.175 |
| Hy3 | 25.3 | $0.241 |
| Solar Pro 4 | 28.2 | $0.525 |
Leaderboard neighbours
| Model | Intelligence | Blended $/1M |
|---|---|---|
| GPT-5.5 Instant (June 2026) | 26.0 | $11.25 |
| MiMo-V2.5-Pro (Reasoning) | 26.0 | $0.544 |
| Kimi K2.7 Code | 25.8 | $1.712 |
| Grok 4.20 0309 v2 (Reasoning) | 25.7 | $1.563 |
| Inkling Small | 25.7 | $0.525 |
| Hy3 | 25.3 | $0.241 |
| K2 Horizon MoVA 36B A4B | 25.3 | — |
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 2026-10-15
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.
What is the Grok 4.20 0309 v2 API price?
The Grok 4.20 0309 v2 API price is $1.25 per 1M input tokens and $2.50 per 1M output tokens ($1.563 per 1M blended).
How much does Grok 4.20 0309 v2 cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about 0.137¢ on Grok 4.20 0309 v2, at $1.25/1M input and $2.50/1M output.
Is Grok 4.20 0309 v2 free?
Grok 4.20 0309 v2's official API list price is $1.25 per 1M input tokens and $2.50 per 1M output tokens. This site tracks list prices only, not free tiers or trial credits — check SpaceXAI's site for those.
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 #86 of 547 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 2026-10-15.