API cost decision in 10 seconds

NewOpenAI GPT Terra Latest vs Gemini 3.5 Flash Lite

Pick Gemini 3.5 Flash Lite for lower cost; pick OpenAI GPT Terra Latest only if the larger context window matters more.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Gemini 3.5 Flash Lite for lower cost; pick OpenAI GPT Terra Latest only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Gemini 3.5 Flash Lite is estimated at $1.55 vs $8 for OpenAI GPT Terra Latest, saving $6.45 (80.6% lower).

Cost-first pickGemini 3.5 Flash Lite
Context-first pickOpenAI GPT Terra Latest
Sample savings$6.4580.6%
10x traffic gap$64.5

OpenAI GPT Terra Latest has more context, but Gemini 3.5 Flash Lite saves $6.45 on the standard workload. At 10x that traffic, the same price gap is about $64.5. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Gemini 3.5 Flash Lite stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickOpenAI GPT Terra LatestGemini 3.5 Flash Lite
Input-heavy / RAG5M input + 500K outputGemini 3.5 Flash Lite$16$2.75
Balanced workload1M input + 1M outputGemini 3.5 Flash Lite$14$2.8
Output-heavy chatbot1M input + 5M outputGemini 3.5 Flash Lite$62$12.8
Cheaper input Gemini 3.5 Flash Lite $2 vs $0.3 / 1M

Gemini 3.5 Flash Lite is $1.7 cheaper per 1M input tokens (85% lower; 6.67x difference).

Cheaper output Gemini 3.5 Flash Lite $12 vs $2.5 / 1M

Gemini 3.5 Flash Lite is $9.5 cheaper per 1M output tokens (79.2% lower; 4.8x difference).

Larger context OpenAI GPT Terra Latest 1.05M vs 1.05M

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

Sample workload Gemini 3.5 Flash Lite $8 vs $1.55

Gemini 3.5 Flash Lite is $6.45 cheaper on the standard workload (80.6% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
OpenAI GPT Terra Latest Calculating… Estimated API cost
Gemini 3.5 Flash Lite 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 3.5 Flash Lite has the lower input price; Gemini 3.5 Flash Lite has the lower output price; OpenAI GPT Terra Latest offers the larger context window. For the 1M input plus 500K output sample, Gemini 3.5 Flash Lite is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $8 for OpenAI GPT Terra Latest and $1.55 for Gemini 3.5 Flash Lite.

Best Fit

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

Choose Gemini 3.5 Flash Lite when you care most about lower input-token price, and lower output-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, Gemini 3.5 Flash Lite is estimated at $1.55 vs $8 for OpenAI GPT Terra Latest, saving $6.45 (80.6% lower).
  • Gemini 3.5 Flash Lite is $6.45 cheaper on the standard workload (80.6% lower).
  • Gemini 3.5 Flash Lite is $1.7 cheaper per 1M input tokens (85% lower; 6.67x difference).
  • Gemini 3.5 Flash Lite is $9.5 cheaper per 1M output tokens (79.2% lower; 4.8x difference).
  • OpenAI GPT Terra Latest has 1.42K more context (1x larger).
Head-to-Head Specs
FeatureNewOpenAI GPT Terra Latest
(OpenAI)		Gemini 3.5 Flash Lite
(Google)
Input Price
prompt tokens per 1M		$2$0.3
Completion Price
per 1M tokens		$12$2.5
Sample Workload Cost
1M input + 500K output		$8$1.55
Context Window1.05M1.05M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionGemini 3.5 Flash LiteOn the standard 1M input plus 500K output workload, Gemini 3.5 Flash Lite is estimated at $1.55 vs $8 for OpenAI GPT Terra Latest, saving $6.45 (80.6% lower).
High-volume input processingGemini 3.5 Flash LiteLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsGemini 3.5 Flash LiteLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workOpenAI GPT Terra LatestA larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • gpt-oss-120b (free) can replace OpenAI GPT Terra Latest when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace OpenAI GPT Terra Latest when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace OpenAI GPT Terra Latest when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace OpenAI GPT Terra Latest when lower sample workload cost matters most: $0.12.

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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OpenAI catalog

Review all tracked OpenAI models before deciding whether this matchup is the right shortlist.

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Google catalog

Check other Google models with comparable pricing, context, or release timing.

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OpenAI GPT Terra Latest

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

Gemini 3.5 Flash Lite

Gemini 3.5 Flash Lite is a high-efficiency model from Google with upgraded agentic capabilities. It is suited for subagents that execute focused tasks within complex, multi-agent workflows.