Gemini 3.1 Pro
Gemini 3.1 Pro scores 1447 on WebDev Arena — rank 26 of 29 models we track with a published score and costs $4.50 per 1M blended tokens on the API — the best-scoring model at that price is Claude Sonnet 5.5 (1768).
API price
$4.50
per 1M blended tokens
WebDev Arena
1447
rank 26 of 29 tracked models
Benchmark scores
| Benchmark | Score | Rank | Source | Published |
|---|---|---|---|---|
| WebDev Arena | 1447default | #26 of 29 | LMArena | 2026-10-19 |
| DeepSWE | 11.7%default | #12 of 12 | Epoch AI Benchmarking Hub | 2026-02-19 |
The rank is among the 29 models we track with a published score for that benchmark — not the full leaderboard of the source, which lists many models we do not track. Where a source publishes several reasoning-effort settings, we show the model's best listed result.
API price
- Input
- $2 per 1M tokens
- Output
- $12 per 1M tokens
- Blended (3 input : 1 output)
- $4.50 per 1M tokens
- Above 200K input tokens
- $4 in / $18 out
Long-context rates apply above 200,000 input tokens.
Checked 2026-10-17 · source
Where it sits
WebDev Arena score against API price, with every model we can price and score on the same benchmark. Up and to the left is better.
- Value frontier
- No — a cheaper model scores higher
- Best model at $4.50 or less
- Claude Sonnet 5.51768 · $4
- Cheaper and scoring higher
- Claude Sonnet 5.51768 · $4, GPT-6.1 Sol1753 · $4, Qwen3.8-Max1674 · $3
- Cheaper models on the frontier
- DeepSeek V4.1 Flash1664 · $0.52, Qwen3.8-Max1674 · $3, Claude Sonnet 5.51768 · $4
Plans that include Gemini 3.1 Pro
- Google AI Pro
Google
- Google AI Ultra 5x
Google
- Google AI Ultra 20x
Google
Other Google models
Common questions
- How much does Gemini 3.1 Pro cost?
- $2 per 1M input tokens and $12 per 1M output tokens, which is $4.50 on a 3:1 input:output mix. The price was checked on 2026-10-17.
- Which subscription plans include Gemini 3.1 Pro?
- 3 of the plans we track list it by name: Google AI Pro ($19.99/mo), Google AI Ultra 5x ($99.99/mo), Google AI Ultra 20x ($199.99/mo).
- How does Gemini 3.1 Pro rank on WebDev Arena?
- It ranks 26 of 29 models we track with a published WebDev Arena score, at 1447. The rank is among the models on this site, not the full LMArena leaderboard.
- Is Gemini 3.1 Pro the best value for coding?
- No. 3 tracked models scores higher on WebDev Arena and costs less. The best-scoring model at $4.50 or less is Claude Sonnet 5.5.
- What is the cheapest way to use Gemini 3.1 Pro?
- Google AI Pro is the cheapest subscription we track that lists it, at $19.99/month. Per-token API pricing is listed separately above.