API cost decision in 10 seconds

NewGemini 3.1 Flash Lite vs OpenAI GPT Latest

Pick Gemini 3.1 Flash Lite for lower cost; pick OpenAI GPT Latest only if the larger context window matters more.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Gemini 3.1 Flash Lite for lower cost; pick OpenAI GPT Latest only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite is estimated at $1 vs $20 for OpenAI GPT Latest, saving $19 (95% lower).

Cost-first pickGemini 3.1 Flash Lite
Context-first pickOpenAI GPT Latest
Sample savings$1995%
10x traffic gap$190

OpenAI GPT Latest has more context, but Gemini 3.1 Flash Lite saves $19 on the standard workload. At 10x that traffic, the same price gap is about $190. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Gemini 3.1 Flash Lite stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGemini 3.1 Flash LiteOpenAI GPT Latest
Input-heavy / RAG5M input + 500K outputGemini 3.1 Flash Lite$2$40
Balanced workload1M input + 1M outputGemini 3.1 Flash Lite$1.75$35
Output-heavy chatbot1M input + 5M outputGemini 3.1 Flash Lite$7.75$155
Cheaper input Gemini 3.1 Flash Lite $0.25 vs $5 / 1M

Gemini 3.1 Flash Lite is $4.75 cheaper per 1M input tokens (95% lower; 20x difference).

Cheaper output Gemini 3.1 Flash Lite $1.5 vs $30 / 1M

Gemini 3.1 Flash Lite is $28.5 cheaper per 1M output tokens (95% lower; 20x difference).

Larger context OpenAI GPT Latest 1.05M vs 1.05M

OpenAI GPT Latest has 1.42K more context (1x larger).

Sample workload Gemini 3.1 Flash Lite $1 vs $20

Gemini 3.1 Flash Lite is $19 cheaper on the standard workload (95% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Gemini 3.1 Flash Lite Calculating… Estimated API cost
OpenAI GPT Latest Calculating… Estimated API cost
Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

Gemini 3.1 Flash Lite has the lower input price; Gemini 3.1 Flash Lite has the lower output price; OpenAI GPT Latest offers the larger context window. For the 1M input plus 500K output sample, Gemini 3.1 Flash Lite is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $1 for Gemini 3.1 Flash Lite and $20 for OpenAI GPT Latest.

Best Fit

Choose Gemini 3.1 Flash Lite when you care most about lower input-token price, and lower output-token price.

Choose OpenAI GPT Latest when you care most about larger context window.

Decision Notes
  • On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite is estimated at $1 vs $20 for OpenAI GPT Latest, saving $19 (95% lower).
  • Gemini 3.1 Flash Lite is $19 cheaper on the standard workload (95% lower).
  • Gemini 3.1 Flash Lite is $4.75 cheaper per 1M input tokens (95% lower; 20x difference).
  • Gemini 3.1 Flash Lite is $28.5 cheaper per 1M output tokens (95% lower; 20x difference).
  • OpenAI GPT Latest has 1.42K more context (1x larger).
Head-to-Head Specs
FeatureNewGemini 3.1 Flash Lite
(Google)		OpenAI GPT Latest
(OpenAI)
Input Price
prompt tokens per 1M		$0.25$5
Completion Price
per 1M tokens		$1.5$30
Sample Workload Cost
1M input + 500K output		$1$20
Context Window1.05M1.05M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionGemini 3.1 Flash LiteOn the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite is estimated at $1 vs $20 for OpenAI GPT Latest, saving $19 (95% lower).
High-volume input processingGemini 3.1 Flash LiteLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsGemini 3.1 Flash LiteLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workOpenAI GPT LatestA larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • Gemma 4 26B A4B (free) can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.
  • Gemma 4 31B (free) can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.
  • Lyria 3 Pro Preview can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.
  • Lyria 3 Clip Preview can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.
Larger context near this budget
Popular competitors
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Provider catalogs

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Google catalog

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OpenAI catalog

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Gemini 3.1 Flash Lite

Gemini 3.1 Flash Lite is Google’s GA high-efficiency multimodal model optimized for low-latency, high-volume workloads. It supports text, image, video, audio, and PDF inputs, and is designed for lightweight agentic...

OpenAI GPT Latest

This model always redirects to the latest model in the OpenAI GPT family.