xAI Grok
Grok 4.1 Fast (Non-Reasoning)
$0.275 / 1M tokens
cheapest at Google Cloud Vertex AI · $0.20 in · $0.50 out
No category wins
Head to head · prices updated Oct 31, 2026
Grok 4.1 Fast (Non-Reasoning) vs gpt-oss-20b
Grok 4.1 Fast (Non-Reasoning) costs 5.0× as much as gpt-oss-20b at their cheapest providers (blended 3 input : 1 output tokens).
OpenAI
gpt-oss-20b
$0.055 / 1M tokens
cheapest at W&B Inference (CoreWeave) · $0.03 in · $0.13 out
Wins 3 of 3
- Lower pricegpt-oss-20b
- Longer contextgpt-oss-20b
- More providersgpt-oss-20b
Verdict
gpt-oss-20b is the better deal on price
Grok 4.1 Fast (Non-Reasoning) costs 5.0× as much as gpt-oss-20b at their cheapest providers (blended 3 input : 1 output tokens).
gpt-oss-20b accepts longer prompts (131K vs 128K tokens).
Your monthly bill
What would each cost you?
gpt-oss-20b saves you $2.44 a month ($29.28 a year) for this workload.
Side by side
| Grok 4.1 Fast (Non-Reasoning) | gpt-oss-20b | |
|---|---|---|
| Cheapest blended price / 1M | $0.275 | $0.055 |
| Input / output per 1M | $0.20 / $0.50 | $0.03 / $0.13 |
| Accuracy (GPQA Diamond) | not measured | 60.8% (medium reasoning) |
| Max context | 128K | 131K |
| Providers we track | 2 | 10 |
Standard list prices at each model's cheapest provider we track; blended = 3 input : 1 output tokens. GPQA Diamond from Epoch AI (CC BY 4.0), best measured reasoning setting, named next to each score. Methodology.
Where to buy each one
gpt-oss-20b
- W&B Inference (CoreWeave)$0.055
- DeepInfra$0.0575
- Novita AI$0.0675
- SiliconFlow$0.075
- OVHcloud AI Endpoints$0.0754
Questions people ask
Is Grok 4.1 Fast (Non-Reasoning) cheaper than gpt-oss-20b?
Grok 4.1 Fast (Non-Reasoning) costs 5.0× as much as gpt-oss-20b at their cheapest providers (blended 3 input : 1 output tokens).
How much does Grok 4.1 Fast (Non-Reasoning) cost per 1M tokens?
From $0.20 input and $0.50 output per 1M tokens at Google Cloud Vertex AI, the cheapest of 2 providers we track.
How much does gpt-oss-20b cost per 1M tokens?
From $0.03 input and $0.13 output per 1M tokens at W&B Inference (CoreWeave), the cheapest of 10 providers we track.
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