grok-4-20-0309-reasoning
Price over time
The same capability, cheaper
grok-4-20-0309-reasoning scores 89% on GPQA Diamond. The cheapest model clearing the GPQA 80%+ bar today is qwen3-7-flash at $0.055 blended — 28.4× less than this model's $1.56. Blended = 75% input, 25% output. Capability is one benchmark, not the whole story.
- 89%
- GPQA Diamond
- 92%
- Mock AIME
- 1,000,000
- Context window
- 2026-02-17
- Released
- xAI
- Developer
- 2
- Price changes
- 2026-03-09
- Tracked since
- 1.9× cheaper
- Since first record
Recorded price changes
One row per change, newest first. US dollars per million tokens. Each row links to the exact commit or archived page the figure was read from.
| Date | Input | Output | Cached in | Blended | Change | Source |
|---|---|---|---|---|---|---|
| 2026-08-11 | $1.25 | $2.50 | $0.200 | $1.56 | ↓ 1.9× | litellm@0e89bf6 |
| 2026-03-09 | $2.00 | $6.00 | $0.200 | $3.00 | litellm@caa0db3 |
How this was collected
Prices come from replaying the version history of LiteLLM's public pricing file and from vendor pricing pages archived by the Wayback Machine, then cleaned to remove metadata edits, same-day churn, unit slips and typo corrections. The full method and every script is in the repository. List pricing, not negotiated pricing.
See how the cost of a fixed level of capability has fallen →