Alternatives · 15 models compared · checked 17 Aug 2026
Gemini 3.1 Pro Preview Custom Tools alternatives: 15 models in or near grid E5
The closest model to Gemini 3.1 Pro Preview Custom Tools on the atlas is Gemini 2.5 Pro Preview 06-05, in the same square, at $1.25 per 1M input tokens against Gemini 3.1 Pro Preview Custom Tools’s . 10 of the 15 nearest models are cheaper on input; the cheapest is DeepSeek V4.1 Flash at $0.30. We rank by position on the atlas, not by capability, because we hold no capability data.
$2.00
observed We measured
- Source
- Our catalogue
- Retrieved
- 17 Aug 2026
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Cite this page
ModelsAtlas. “Gemini 3.1 Pro Preview Custom Tools alternatives: 15 models in or near grid E5”. Retrieved 17 Aug 2026. https://modelsatlas.com/models/google/gemini-3-1-pro-preview-customtools/alternatives
Where the alternatives sit
Each square is a price band (A–H) × a context band (1–6). How the grid works
Same squareGRIDE511 modelsClaude Sonnet 5, Claude Sonnet 5.5, Gemini 2.5 Pro Preview 06-05 and 8 more
Gemini 3.1 Pro Preview Custom ToolsIts 15 nearest modelsOther modelsOpen weights
View the map as a table (2 squares)
| Square | Price band | Context band | Models |
|---|---|---|---|
| GRIDD5 | $0.30–1 | 1M | DeepSeek V4.1 Flash, Gemini 2.5 Flash, Gemini 3.5 Flash Lite, MiniMax M3 |
| GRIDE5 | $1–3 | 1M | Gemini 3.1 Pro Preview Custom Tools, Gemini 2.5 Pro Preview 06-05, Grok 4.3, Muse Spark 1.1, Muse Spark 1.2, Muse Spark 1.3, Gemini 3.5 Flash, Claude Sonnet 5, Claude Sonnet 5.5, Gemini 3.1 Pro Preview, GPT-4.1, Qwen3.8 2.4T A95B |
Top 15 alternatives
Ranked by steps away on the atlas, then cheaper before pricier, then input price
| # | Model | Grid | Why it fits | Input / 1M | vs Gemini 3.1 Pro Preview Custom Tools | Output / 1M | Context | |
|---|---|---|---|---|---|---|---|---|
| — | Gemini 3.1 Pro Preview Custom ToolsGoogle · the model you’re replacing | GRIDE5 | Baseline | $2.00 | — | $12.00 | 1.05M | |
| 1 | Gemini 2.5 Pro Preview 06-05Google | GRIDE5 | Same maker, same square, 38% cheaper input | $1.25 | −37% | $10.00 | 1.05M | |
| 2 | Grok 4.3xAI | GRIDE5 | Same square, 38% cheaper input | $1.25 | −37% | $2.50 | 1M | |
| 3 | Muse Spark 1.1Meta | GRIDE5 | Same square, 38% cheaper input | $1.25 | −37% | $4.25 | 1.05M | |
| 4 | Muse Spark 1.2Meta | GRIDE5 | Same square, 38% cheaper input | $1.25 | −37% | $4.25 | 1.05M | |
| 5 | Muse Spark 1.3Meta | GRIDE5 | Same square, 38% cheaper input | $1.25 | −37% | $4.25 | 1.05M | |
| 6 | Gemini 3.5 FlashGoogle | GRIDE5 | Same maker, same square, 25% cheaper input | $1.50 | −25% | $9.00 | 1.05M | Compare → |
| 7 | Claude Sonnet 5Anthropic | GRIDE5 | Same square, same input price | $2.00 | same | $10.00 | 1M | Compare → |
| 8 | Claude Sonnet 5.5Anthropic | GRIDE5 | Same square, same input price | $2.00 | same | $10.00 | 1M | Compare → |
| 9 | Gemini 3.1 Pro PreviewGoogle | GRIDE5 | Same maker, same square, same input price | $2.00 | same | $12.00 | 1.05M | Compare → |
| 10 | GPT-4.1OpenAI | GRIDE5 | Same square, same input price | $2.00 | same | $8.00 | 1.05M | Compare → |
| 11 | Qwen3.8 2.4T A95BQwen (Alibaba) | GRIDE5 | Same square, same input price | $2.00 | same | $6.00 | 1.05M | Compare → |
| 12 | DeepSeek V4.1 FlashDeepSeek | GRIDD5 | Neighbouring square D5, 85% cheaper input | $0.30 | −85% | $1.20 | 1.05M | |
| 13 | Gemini 2.5 FlashGoogle | GRIDD5 | Same maker, neighbouring square D5, 85% cheaper input | $0.30 | −85% | $2.50 | 1.05M | |
| 14 | Gemini 3.5 Flash LiteGoogle | GRIDD5 | Same maker, neighbouring square D5, 85% cheaper input | $0.30 | −85% | $2.50 | 1.05M | |
| 15 | MiniMax M3MiniMax | GRIDD5 | Neighbouring square D5, 85% cheaper input | $0.30 | −85% | $1.20 | 1.05M |
What switching saves
3,000 input + 800 output tokens × 1,000 requests a day
Σ Derived from standard-tier prices; excludes caching and batch discounts. Use your own numbers →
Larger-context alternatives
| Model | Input / 1M | Context | |
|---|---|---|---|
| Grok 4.20xAI | $1.25 | 2M | |
| Grok 4.20 Multi-AgentxAI | $1.25 | 2M | |
| GPT-5.6 SolOpenAI | $2.00 | 1.05M | |
| GPT-5.6 TerraOpenAI | $2.00 | 1.05M | |
| GPT-6 SolOpenAI | $2.00 | 1.05M |
Free alternatives
| Model | Input / 1M | Context | |
|---|---|---|---|
| Lyria 3 Clip PreviewGoogle | Free | 1.05M | |
| Lyria 3 Pro PreviewGoogle | Free | 1.05M |
Compare Gemini 3.1 Pro Preview Custom Tools head to head
Questions
What is the best alternative to Gemini 3.1 Pro Preview Custom Tools?
Gemini 2.5 Pro Preview 06-05 ranks first: same maker, same square, 38% cheaper input. Input is $1.25 per 1M tokens against $2.00 for Gemini 3.1 Pro Preview Custom Tools. Ranking is by position on the atlas, not by quality.
What is the cheapest alternative to Gemini 3.1 Pro Preview Custom Tools?
DeepSeek V4.1 Flash at $0.30 per 1M input tokens, 85% less than Gemini 3.1 Pro Preview Custom Tools, among the 15 closest.
Is there an open-weight alternative to Gemini 3.1 Pro Preview Custom Tools?
None of the 15 closest is marked open-weight in our records.
Which alternative has a larger context window?
None of the 15 closest holds more than Gemini 3.1 Pro Preview Custom Tools's 1.05M.
How are alternatives ranked?
By distance on the atlas grid from Gemini 3.1 Pro Preview Custom Tools's square E5: the same square first, then neighbouring squares. Within the same distance, cheaper models come before pricier ones, then the lowest input price wins. We hold no capability data, so we do not claim a model can do what Gemini 3.1 Pro Preview Custom Tools does, only that it costs and holds about the same. No vendor pays for position.
More alternatives
Keep going in your AI
Opens with this page as the source. We add nothing else to the prompt.
- What is the best alternative to Gemini 3.1 Pro Preview Custom Tools?
- What is the cheapest alternative to Gemini 3.1 Pro Preview Custom Tools?
- Is there an open-weight alternative to Gemini 3.1 Pro Preview Custom Tools?