API cost decision in 10 seconds

Gemini 2.5 Flash Lite Preview 09-2025 vs Gemma 4 31B (free)

Pick Gemma 4 31B (free) for lower cost; pick Gemini 2.5 Flash Lite Preview 09-2025 only if the larger context window matters more.

Page updated: 2026-05-26T15:08:08Z Data confirmed: 2026-05-26T20:08:05Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Gemma 4 31B (free) for lower cost; pick Gemini 2.5 Flash Lite Preview 09-2025 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Gemma 4 31B (free) is estimated at $0 vs $0.3 for Gemini 2.5 Flash Lite Preview 09-2025, saving $0.3 (100% lower).

Cost-first pickGemma 4 31B (free)

Context-first pickGemini 2.5 Flash Lite Preview 09-2025

Sample savings$0.3100%

10x traffic gap$3

Gemini 2.5 Flash Lite Preview 09-2025 has more context, but Gemma 4 31B (free) saves $0.3 on the standard workload. At 10x that traffic, the same price gap is about $3. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Gemma 4 31B (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Gemini 2.5 Flash Lite Preview 09-2025	Gemma 4 31B (free)
Input-heavy / RAG	5M input + 500K output	Gemma 4 31B (free)	$0.7	$0
Balanced workload	1M input + 1M output	Gemma 4 31B (free)	$0.5	$0
Output-heavy chatbot	1M input + 5M output	Gemma 4 31B (free)	$2.1	$0

Cheaper input Gemma 4 31B (free) $0.1 vs $0 / 1M

Gemma 4 31B (free) is free for input tokens while Gemini 2.5 Flash Lite Preview 09-2025 costs $0.1 per 1M tokens.

Cheaper output Gemma 4 31B (free) $0.4 vs $0 / 1M

Gemma 4 31B (free) is free for output tokens while Gemini 2.5 Flash Lite Preview 09-2025 costs $0.4 per 1M tokens.

Larger context Gemini 2.5 Flash Lite Preview 09-2025 1.05M vs 262.14K

Gemini 2.5 Flash Lite Preview 09-2025 has 786.43K more context (4x larger).

Sample workload Gemma 4 31B (free) $0.3 vs $0

Gemma 4 31B (free) is free for the standard workload while the other model is estimated at $0.3.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Gemini 2.5 Flash Lite Preview 09-2025 Calculating… Estimated API cost

Gemma 4 31B (free) 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

Gemma 4 31B (free) has the lower input price; Gemma 4 31B (free) has the lower output price; Gemini 2.5 Flash Lite Preview 09-2025 offers the larger context window. For the 1M input plus 500K output sample, Gemma 4 31B (free) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.3 for Gemini 2.5 Flash Lite Preview 09-2025 and $0 for Gemma 4 31B (free).

Best Fit

Choose Gemini 2.5 Flash Lite Preview 09-2025 when you care most about larger context window.

Choose Gemma 4 31B (free) 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, Gemma 4 31B (free) is estimated at $0 vs $0.3 for Gemini 2.5 Flash Lite Preview 09-2025, saving $0.3 (100% lower).
Gemma 4 31B (free) is free for the standard workload while the other model is estimated at $0.3.
Gemma 4 31B (free) is free for input tokens while Gemini 2.5 Flash Lite Preview 09-2025 costs $0.1 per 1M tokens.
Gemma 4 31B (free) is free for output tokens while Gemini 2.5 Flash Lite Preview 09-2025 costs $0.4 per 1M tokens.
Gemini 2.5 Flash Lite Preview 09-2025 has 786.43K more context (4x larger).

Head-to-Head Specs

Feature	Gemini 2.5 Flash Lite Preview 09-2025 (Google)	Gemma 4 31B (free) (Google)
Input Price prompt tokens per 1M	$0.1	$0
Completion Price per 1M tokens	$0.4	$0
Sample Workload Cost 1M input + 500K output	$0.3	$0
Context Window	1.05M	262.14K
Release Date	2025-09-25	2026-04-02
Popularity	#75	#105

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Gemma 4 31B (free)	On the standard 1M input plus 500K output workload, Gemma 4 31B (free) is estimated at $0 vs $0.3 for Gemini 2.5 Flash Lite Preview 09-2025, saving $0.3 (100% lower).
High-volume input processing	Gemma 4 31B (free)	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Gemma 4 31B (free)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Gemini 2.5 Flash Lite Preview 09-2025	A 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 2.5 Flash Lite Preview 09-2025 when lower sample workload cost matters most: $0.
Lyria 3 Clip Preview can replace Gemini 2.5 Flash Lite Preview 09-2025 when lower sample workload cost matters most: $0.
Lyria 3 Pro Preview can replace Gemini 2.5 Flash Lite Preview 09-2025 when lower sample workload cost matters most: $0.
Gemma 3 4B can replace Gemini 2.5 Flash Lite Preview 09-2025 when lower sample workload cost matters most: $0.08.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.
Owl Alpha offers 1.05M context with $0 sample workload cost.

Popular competitors

DeepSeek V4 Flash · DeepSeek · #1
Hy3 preview · Tencent · #2
Claude Opus 4.7 · Anthropic · #3
Claude Sonnet 4.6 · Anthropic · #4

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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Google catalog

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Gemini 2.5 Flash Lite Preview 09-2025

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Gemma 4 31B (free)

Gemma 4 31B Instruct is Google DeepMind's 30.7B dense multimodal model supporting text and image input with text output. Features a 256K token context window, configurable thinking/reasoning mode, native function...