text model comparison
Gemini 3.1 Pro Preview vs GPT-6.1 Sol
Gemini 3.1 Pro Preview and GPT-6.1 Sol are both current text models, from Google and OpenAI. On Arena Text, Gemini 3.1 Pro Preview scores 1487 Elo and GPT-6.1 Sol 1481 Elo (Arena, measured October 28, 2026). Both accept about 1.05M tokens of context (1,050,000 and 1,048,576).
- Higher Arena Text
- Gemini 3.1 Pro Preview1487 Elo against 1481 Elo
- Longer context window
- GPT-6.1 Sol1.05M tokens against 1.05M tokens
- Newer release
- GPT-6.1 SolSep 2026 against Feb 2026
Data verified November 3, 2026 · Dataset 2026-11-03
Side by side
Gemini 3.1 Pro Preview and GPT-6.1 Sol, line by line
Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.
| Fact | Gemini 3.1 Pro Preview | GPT-6.1 Sol |
|---|---|---|
| Price | ||
| Price per 1M input tokens | Not listed | $2 |
| Price per 1M output tokens | Not listed | $10 |
| Independent benchmarks | ||
| Arena Text | 1487 Elo (#10 of 51) (better) | 1481 Elo (#16 of 51) |
| Arena WebDev | 1447 Elo (#36 of 45) | 1751 Elo (#4 of 45) (better) |
| FrontierMath Tiers 1-3 (v2) | 59.6% (#30 of 42) | 93.7% (#1 of 42) (better) |
| GPQA Diamond | 94.4% (#6 of 41) | 95.4% (#4 of 41) (better) |
| SimpleQA Verified | 73.5% (#4 of 38) | 73.9% (#3 of 38) (better) |
| Specs | ||
| Provider | OpenAI | |
| Release date | February 19, 2026 | September 29, 2026 |
| Access | API only | API only |
| Context window | 1,048,576 tokens | 1,050,000 tokens |
| Max output | 65,536 tokens | 128,000 tokens |
| Input | text, image, audio, video | text, image |
| Output | text | text |
Charts
Against every current text model
Where Gemini 3.1 Pro Preview and GPT-6.1 Sol land among the current models of their task, on every independent benchmark, on price and on context.
Where each stands
On Arena Text, Gemini 3.1 Pro Preview ranks #10 and GPT-6.1 Sol #16 of 51 current models. Each bar is the share of current models it beats: on score, price and context.
Independent benchmarks
Arena Text
Gemini 3.1 Pro Preview:#10of 51
1,487 Elo · ahead of 82%
GPT-6.1 Sol:#16of 51
1,481 Elo · ahead of 68%
Arena WebDev
Gemini 3.1 Pro Preview:#36of 45
1,447 Elo · ahead of 20%
GPT-6.1 Sol:#4of 45
1,751 Elo · ahead of 93%
FrontierMath Tiers 1-3 (v2)
Gemini 3.1 Pro Preview:#30of 42
59.6% · ahead of 29%
GPT-6.1 Sol:#1of 42
93.7% · ahead of 98%
GPQA Diamond
Gemini 3.1 Pro Preview:#6of 41
94.4% · ahead of 88%
GPT-6.1 Sol:#4of 41
95.4% · ahead of 90%
SimpleQA Verified
Gemini 3.1 Pro Preview:#4of 38
73.5% · ahead of 92%
GPT-6.1 Sol:#3of 38
73.9% · ahead of 95%
Price and context
Price per 1M input tokens
Gemini 3.1 Pro Preview: Not listed
GPT-6.1 Sol:#29of 52
$2 · cheaper than 24%
Price per 1M output tokens
Gemini 3.1 Pro Preview: Not listed
GPT-6.1 Sol:#34of 52
$10 · cheaper than 25%
Context window
Gemini 3.1 Pro Preview:#11of 64
1.05M tokens · longer than 67%
GPT-6.1 Sol:#1of 64
1.05M tokens · longer than 86%
Quality against price
GPT-6.1 Sol scores 1,481 at $4 (blended price per 1M tokens). The line joins the current models no other beats on both price and Arena Text score; hover any point to name it.
Quality against price: the data
| Model | Provider | Blended price per 1M tokens | Arena Text (Elo) |
|---|---|---|---|
| Gemini 4 Argon | $4 | 1,520 | |
| Claude Opus 5.5 | Anthropic | $8 | 1,509 |
| Muse Wonder | Meta | $8 | 1,507 |
| Claude Fable 5 | Anthropic | $20 | 1,504 |
| Claude Fable 5.1 | Anthropic | $20 | 1,504 |
| Gemini 3.8 Flash | $1.50 | 1,496 | |
| Muse Spark 1.3 | Meta | $2 | 1,495 |
| Claude Opus 5 | Anthropic | $10 | 1,492 |
| Kimi K3 | Moonshot Kimi | $6 | 1,488 |
| GPT-5.6 Sol | OpenAI | $8 | 1,485 |
| Gemini 3.6 Flash | $3 | 1,483 | |
| GPT-5.5 | OpenAI | $11 | 1,482 |
| Claude Opus 4.8 | Anthropic | $10 | 1,482 |
| Qwen3.8-Max | Alibaba Qwen | $3 | 1,482 |
| GPT-6.1 Sol | OpenAI | $4 | 1,481 |
| GLM-5.3 | Z.ai | $2.15 | 1,481 |
| MiMo-V2.6-Pro | Xiaomi MiMo | $0.54 | 1,480 |
| Claude Sonnet 5.5 | Anthropic | $4 | 1,477 |
| GLM-5.3-Flash | Z.ai | $0.24 | 1,477 |
| GPT-6 Astra | OpenAI | $20 | 1,476 |
| DeepSeek-V4.1-Flash | DeepSeek | $0.52 | 1,476 |
| GPT-5.4 | OpenAI | $5.63 | 1,475 |
| Gemini 3 Flash Preview | $1.13 | 1,473 | |
| Grok 4.20 | xAI | $1.56 | 1,472 |
| GPT-5.6 Terra | OpenAI | $4.50 | 1,467 |
| Grok 4.5 | xAI | $3 | 1,465 |
| DeepSeek-V4-Pro | DeepSeek | $1.98 | 1,465 |
| Claude Sonnet 5 | Anthropic | $4 | 1,462 |
| GPT-6 Sol | OpenAI | $4 | 1,458 |
| Gemini 3.5 Flash-Lite | $0.85 | 1,456 | |
| Grok 4.6 | xAI | $3 | 1,455 |
| GPT-5.6 Luna | OpenAI | $0.45 | 1,453 |
| MiMo-V2.6-Flash | Xiaomi MiMo | $0.18 | 1,448 |
| Step 5 Preview | StepFun | $1.43 | 1,448 |
| Grok 4.3 | xAI | $1.56 | 1,442 |
| GPT-6 Luna | OpenAI | $0.20 | 1,441 |
| Grok 4.7 | xAI | $3 | 1,441 |
| Mistral Large 4 | Mistral AI | $1.05 | 1,432 |
| Claude Haiku 5.5 | Anthropic | $0.20 | 1,425 |
| GPT-4.1 | OpenAI | $3.50 | 1,415 |
| Solar Pro 4 | Upstage | $0.52 | 1,388 |
| GPT-4.1 mini | OpenAI | $0.70 | 1,383 |
| GPT-4.1 nano | OpenAI | $0.18 | 1,322 |
Cost
What each costs
Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.
| Workload or rate | Gemini 3.1 Pro Preview | GPT-6.1 Sol |
|---|---|---|
| Other listed rates | ||
| 1M input tokens, cached | Not listed | $0.10 |
| 1M input tokens, cached, prompts over 200K tokens | $0.40 | Not listed |
| 1M input tokens, cached, prompts up to 200K tokens | $0.20 | Not listed |
| 1M input tokens, prompts over 272K tokens | Not listed | $4 |
| 1M output tokens, prompts over 272K tokens | Not listed | $15 |
| 1M input tokens, prompts over 200K tokens | $4 | Not listed |
| 1M output tokens, prompts over 200K tokens | $18 | Not listed |
| 1M input tokens, prompts up to 200K tokens | $2 | Not listed |
| 1M output tokens, prompts up to 200K tokens | $12 | Not listed |
Your own bill will differ. These figures use list prices and example workloads. The AI Model Cost Audit reviews your real usage, shortlists models that score as well for each task for less, and estimates the savings.
Launch price $100, regular price $150
Verdict
When to choose each
Gemini 3.1 Pro Preview
Where it leads
- Higher Arena Text score, 1487 Elo vs 1481 Elo
- Accepts audio and video input
Best for
- Multimodal reasoning and agentic coding evaluations
Watch out for
- This preview endpoint may change before becoming stable; production use should account for its published prompt-length price tiers
GPT-6.1 Sol
Where it leads
- Higher Arena WebDev score, 1751 Elo vs 1447 Elo
- Higher FrontierMath Tiers 1-3 (v2) score, 93.7% vs 59.6%
- Higher GPQA Diamond score, 95.4% vs 94.4%
- Higher SimpleQA Verified score, 73.9% vs 73.5%
- Longer responses, up to 128,000 vs 65,536 output tokens
- A cached-input rate, $0.10 per 1M tokens
Best for
- Agent loops that replay a large cached prefix
- A drop-in alternative to GPT-6 Sol at the same base cost
Watch out for
- The same 272,000-token long-context cliff applies, rebilling the full request at $4 input and $15 output
- Released a week after GPT-6 Sol at identical base pricing, so the two are easy to confuse on a rate card; the cached rate is the difference
From benchmark to production
Building on Gemini 3.1 Pro Preview or GPT-6.1 Sol?
Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.
AI Model Cost AuditLaunch price $100, regular price $150What the audit includes
FAQ
Gemini 3.1 Pro Preview vs GPT-6.1 Sol FAQ
Do Gemini 3.1 Pro Preview and GPT-6.1 Sol discount cached input?
GPT-6.1 Sol lists a cached-input rate of $0.10 per 1M tokens, 95% below its standard input rate. No cached-input rate is listed for Gemini 3.1 Pro Preview.
Which scores higher on independent benchmarks, Gemini 3.1 Pro Preview or GPT-6.1 Sol?
Gemini 3.1 Pro Preview leads on Arena Text, 1487 Elo to 1481 Elo; GPT-6.1 Sol leads on Arena WebDev, 1751 Elo to 1447 Elo; GPT-6.1 Sol leads on FrontierMath Tiers 1-3 (v2), 93.7% to 59.6%. Scores are independent evaluations, not either vendor's launch figures.
Which has the larger context window, Gemini 3.1 Pro Preview or GPT-6.1 Sol?
Both accept about 1.05M tokens of context (1,050,000 and 1,048,576). GPT-6.1 Sol returns up to 128,000 tokens per response, Gemini 3.1 Pro Preview 65,536.
How do Gemini 3.1 Pro Preview and GPT-6.1 Sol differ in features?
Gemini 3.1 Pro Preview takes text, image, audio and video input; GPT-6.1 Sol takes text and image.
Further reading
More on Gemini 3.1 Pro Preview and GPT-6.1 Sol
Articles on Gemini 3.1 Pro Preview and GPT-6.1 Sol
- OpenAI Models on Google Cloud: What Changes for AI TeamsOctober 22, 2026
Related comparisons
- Claude Haiku 5.5 vs Gemini 3.1 Pro Preview
- Claude Haiku 5.5 vs GPT-6.1 Sol
- Gemini 3.1 Pro Preview vs Gemini 4 Argon
- Gemini 4 Argon vs GPT-6.1 Sol
- Claude Sonnet 5.5 vs Gemini 3.1 Pro Preview
- Claude Opus 5.5 vs GPT-6.1 Sol
- Claude Opus 5.5 vs Gemini 3.1 Pro Preview
- Claude Sonnet 5.5 vs GPT-6.1 Sol
- Gemini 3.1 Pro Preview vs Gemini 3.8 Flash
- Claude Sonnet 5 vs GPT-6.1 Sol
- Gemini 3.1 Pro Preview vs Grok 4.20
- Gemini 3.8 Flash vs GPT-6.1 Sol
Production evaluation
Choosing between Gemini 3.1 Pro Preview and GPT-6.1 Sol?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty