Gemini 3.1 Pro Preview
Gemini 3.1 Pro PreviewAlternatives?
CheaperGPT-6.1 Solmax×3-11%$0.72Remove unsupported parameters+5BetterGPT-6 Lunamax+66%-96%$0.068Function calling only with none · Chat Completions+3
OpenKimi K3max+28%+33%$2.00Sampling parameters are fixed+3
CheaperClaude Sonnet 5.5max×2.8-11%$5.46No forced tool use+5CheaperGemini 4 Argonhigh×2.7-11%*$1.99Synchronous output stops at 65,536+2GPT-6.1 Solmax×3-11%$0.72Remove unsupported parameters+5Claude Sonnet 5.5max×2.8-11%$5.46No forced tool use+5Gemini 4 Argonhigh×2.7-11%*$1.99Synchronous output stops at 65,536+2GPT-6 Solmax×2.2-11%$1.04Claude Haiku 5.5max+78%-96%$0.21Remove sampling parameters+5GPT-6 Lunamax+66%-96%$0.068Function calling only with none · Chat Completions+3GPT-5.6 Lunamax+59%-90%$0.18Claude Haiku 5.5max+78%-96%$0.21Remove sampling parameters+5GPT-6.1 Solmax×3-11%$0.72Remove unsupported parameters+5GPT-6 Solmax×2.2-11%$1.04Kimi K3maxOpen+28%+33%$2.00Sampling parameters are fixed+3Kimi K2.6unstatedOpen-19%-62%$0.95 / $4Context: 1M → 256KGemini 4 Argonhigh×2.7—*$1.99Synchronous output stops at 65,536+2Gemini 3.8 Flashhigh+19%—*$1.24Sampling parameters are ignored+1Gemini 3.6 Flashhigh-13%—*$1.60Gemini Robotics ER 2 Previewn/a——Context: not verifiedGemini 3.5 Flash Litehighn/a—$0.19DiffusionGemma 26B A4BOpenn/a—$0.05 / $0.15Context: 1M → 256K+1Gemma 4 12BthinkingOpenn/a—$0.10 / $0.30Context: 1M → 256K+1Gemini 3.1 Flash Litehighn/a—$0.06All Google models →Benchmarks
in Agents & Tool UseWatch out 1
Cannot use both thinking controls›
Setting thinking_level and legacy thinking_budget together returns HTTP 400; use only one. Source ↗
FAQ
How much does Gemini 3.1 Pro Preview cost?›
$2 per 1M input tokens and $12 per 1M output tokens; cached input $0.20 per 1M.
Is Gemini 3.1 Pro Preview free to use?›
There is no free API; the cheapest paid price is $2 per 1M input tokens.
How good is Gemini 3.1 Pro Preview, and what is it best at?›
#18 of 334 in Chat & Knowledge, #45 of 132 in Coding, #48 of 133 in Agents & Tool Use, #9 of 195 in Writing & Language, #10 of 124 in Vision & Documents. Strongest at: Tool calling, Reasoning, Science, Long context, Knowledge, Instructions, Vision.
Is Gemini 3.1 Pro Preview better than Claude Opus 4.6?›
On Furniture Assembly, Gemini 3.1 Pro Preview scores 26.7 vs 28.3 — lower.
How can I use Gemini 3.1 Pro Preview?›
Through the API of Google, Google AI Studio.
What is the context window of Gemini 3.1 Pro Preview?›
1M tokens, with up to 66K output tokens.
When was Gemini 3.1 Pro Preview released? Is there a newer version?›
Released 2026-02-19. It is the current version in its line.
Is Gemini 3.1 Pro Preview open source?›
No, Gemini 3.1 Pro Preview is a closed model available through an API. The closest open-weights option here is Kimi K3.
Can Gemini 3.1 Pro Preview read images?›
It accepts text and images, PDF files, audio, video as input.
What is Gemini 3.1 Pro Preview?›
Gemini 3.1 Pro Preview is a closed language model from Google, released Feb 2026, the successor to Gemini 2.5 Pro Preview 06-05.
What are the best alternatives to Gemini 3.1 Pro Preview?›
GPT-6.1 Sol (cheaper), GPT-6 Luna (better), Kimi K3 (open weights).