Gemini 3.1 Pro pricing
Gemini 3.1 Pro costs $2.00 per 1M input tokens and $12.00 per 1M output tokens as of September 2026. Tracked daily since 14 June 2026 across 89 snapshots.
Current rates
- Input: $2.00 per 1M tokens
- Output: $12.00 per 1M tokens
- Context window: 1,000,000 tokens
- Above 200,000 tokens the rate changes to $4.00 input / $18.00 output
Recorded changes
| Date | Field | From | To |
|---|---|---|---|
| 26 Jul 2026 | context | 2000000 | 1000000 |
Cheaper alternatives to Gemini 3.1 Pro
Ranked by blended cost assuming a 3:1 input-to-output ratio, which is typical of chat and agent workloads. Only currently callable models with a comparable context window are listed.
| Model | Input / 1M | Output / 1M | Cheaper by |
|---|---|---|---|
| Claude Sonnet 5 | $2.00 | $10.00 | 11% |
| Gemini 2.5 Pro | $1.25 | $10.00 | 24% |
| Grok 4.6 | $2.00 | $6.00 | 33% |
| GPT-5.6 Luna | $1.00 | $6.00 | 50% |
| Muse Spark 1.3 | $1.25 | $4.25 | 56% |