Gemini · Fast / Budget · 1,048.576K context window

Gemini 2.5 Flash pricing for rag pipeline

$0.005550 per call at 6,000 input / 1,500 output tokens.

Per call

$0.005550

10K calls/mo

$55.5

Cache savings

90% off input

Batch savings

50% off all

Calculate your Gemini 2.5 Flash costs

Adjust token counts, volume, and discount toggles to model your rag pipeline spend. Prices verified daily against provider pricing pages.

Configure your usage

6,000
100100K
1,500
5050K
10,000
1001M

Estimated cost

Monthly cost
$55
10,000 calls/month
Cost per call$0.005550
Daily cost$2
Input rate$0.30/MTok
Output rate$2.50/MTok
Analyze your real spend

Quick start

Call Gemini 2.5 Flash with the Google Generative AI SDK:

import google.generativeai as genai

model = genai.GenerativeModel("gemini-2.5-flash")
response = model.generate_content("Your prompt here")
# Cost: ~$0.005550 per call at standard rates
# Input:  $0.30/MTok
# Output: $2.50/MTok

How Gemini 2.5 Flash compares on cost

Per-call cost for all models scoring 50+ on rag pipeline benchmarks. Hover for details.

Cheapest viable option: GPT 5.6 Luna at $0.003000/call (46% less, 85/100 quality).

What drives rag pipeline cost

Retrieval-augmented calls are dominated by the retrieved passages, not the question. Retrieving eight chunks instead of three roughly triples input cost for an answer that is often no better, so retrieval tuning is cost tuning. The system prompt and instructions are identical on every call, which makes cache reads the first thing to enable.

For Gemini 2.5 Flash specifically, that means output tokens cost 8.3x more than input, at $2.50 vs $0.30 per MTok. At this use case’s 6,000/1,500 token split, output accounts for 68% of the $0.005550 per-call cost.

Complete Gemini 2.5 Flash pricing breakdown

Standard token rates

Direction$/MTokTokens per call
Input$0.306,000
Output$2.501,500

Prompt caching: 90% off input tokens

Caching drops input cost from $0.30 to $0.03/MTok. For repeated system prompts, that saves $0.001620 per call.

Batch API: 50% off all tokens

Submit requests asynchronously and receive 50% off all token costs. This works best for offline pipelines where latency requirements are flexible.

Monthly cost projections

Monthly volumeCost per callStandard monthlyCached monthlyYou save with caching
10,000 calls$0.005550$55.5$39.3$16.2
50,000 calls$0.005550$277.5$196.5$81
100,000 calls$0.005550$555$393$162
500,000 calls$0.005550$2,775$1,965$810
1,000,000 calls$0.005550$5,550$3,930$1,620

Gemini 2.5 Flash quality benchmarks for rag pipeline

Benchmark data for rag pipeline is pending for Gemini 2.5 Flash. Test against your own evaluation suite before moving to production.

Performance across all task types

Gemini 2.5 Flash scores by task type. RAG Pipeline highlighted.

Task typeConfidence scoreRank out of 72

Confidence scores are a third-party benchmark snapshot from week 29 of 2026. This snapshot is 10 weeks old, so treat the scores as directional and validate against your own evals.

Alternative models for rag pipeline

12 models score 80+ on rag pipeline benchmarks, sorted by input rate. Cheapest: GPT 5.6 Luna (46% less, 85/100 quality).

ModelProviderInput $/MTokOutput $/MTokQualityPer callvs Gemini
GPT 5.6 LunaGPT$0.20$1.2085/100$0.00300046% cheaper
Claude Haiku 4.5Claude$1.00$5.0086/100$0.0135143% more
Gemini 3.5 FlashGemini$1.50$9.0084/100$0.0225305% more
Claude Sonnet 5Claude$2.00$10.0089/100$0.0270386% more
GPT 5.6 TerraGPT$2.00$12.0092/100$0.0300441% more
Gemini 3.1 ProGemini$2.00$12.0087/100$0.0300441% more
GPT 5.4GPT$2.50$15.0091/100$0.0375576% more
Claude Sonnet 4.6Claude$3.00$15.0088/100$0.0405630% more
GPT 5.6 SolGPT$4.00$20.0091/100$0.0540873% more
Claude Opus 4.8Claude$5.00$25.0085/100$0.06751116% more
GPT 5.5GPT$5.00$30.0090/100$0.07501251% more
Claude Fable 5Claude$10.00$50.0088/100$0.13502332% more

About Gemini 2.5 Flash

Provider

Gemini

Tier

Fast / Budget

Context

1,048.576K tokens

Released

Not published

Backfilled on 2026-09-23. Prices confirmed by the provider pricing page and the LiteLLM cross-check. Release date not published in a machine-readable source. Not yet benchmarked, so never recommended.

Other models from Gemini

ModelTierInput $/MTokOutput $/MTokContext
Gemini 3.1 ProMid-tier$2.00$12.001,048.576K
Gemini 3.5 FlashFast / Budget$1.50$9.001,048.576K
Gemini 3 FlashFast / Budget$0.50$3.001,048.576K
Gemini 3.5 Flash-LiteFast / Budget$0.30$2.501,048.576K
Gemini 2.5 Computer UseFast / Budget$1.25$10.00128K
Gemini 2.5 Flash-LiteFast / Budget$0.10$0.401,048.576K
Gemini 2.5 ProMid-tier$1.25$10.001,048.576K
Gemini 3.1 Flash-LiteFast / Budget$0.25$1.501,048.576K
Gemini 3.1 Pro Custom ToolsMid-tier$2.00$12.001,048.576K
Gemini 3.6 FlashFast / Budget$0.75$3.751,048.576K
Gemini 3.7 FlashFast / Budget$0.75$3.751,048.576K
Gemini 3.8 FlashFast / Budget$0.75$3.751,048.576K
Gemini Omni 1.1 FlashFast / Budget$1.50$9.001,048.576K
Gemini Omni FlashFast / Budget$1.50$9.001,048.576K
Gemini Robotics ER 2Fast / Budget$1.00$5.00131.072K

You can compare Gemini 2.5 Flash head-to-head against any other model on our model comparison pages, or track how pricing has changed over time on the pricing history tracker.

Frequently asked questions

How much does Gemini 2.5 Flash cost for rag pipeline per API call?

A typical rag pipeline call using Gemini 2.5 Flash costs about $0.005550 per call. This estimate uses 6,000 input tokens and 1,500 output tokens at standard rates. Standard rates are $0.30 per million input tokens and $2.50 per million output tokens.

Is Gemini 2.5 Flash the best model for rag pipeline?

Our benchmark data does not yet include a rag pipeline ranking for Gemini 2.5 Flash. We recommend testing it against your own evaluation criteria before production usage.

What is the cheapest model for rag pipeline with good quality?

The most affordable model for rag pipeline above 80/100 quality is GPT 5.6 Luna. It comes from GPT at $0.20 per million input tokens. Output costs $1.20 per million tokens with a quality score of 85/100. Switching from Gemini 2.5 Flash to GPT 5.6 Luna saves about 46% per API call.

How can I reduce my Gemini 2.5 Flash costs for rag pipeline?

Three strategies lower Gemini 2.5 Flash costs for this task type effectively. Prompt caching gives a 90% discount on input tokens when reusing system prompts. The batch API gives 50% off all tokens for asynchronous processing workloads. Prompt optimization reduces token counts through more concise instructions and context windows. Combining caching with batching brings your cost from $0.005550 to about $0.000277 per call.

How does Gemini 2.5 Flash pricing compare to other Gemini models?

Gemini has 15 other models alongside Gemini 2.5 Flash today: Gemini 3.1 Pro at $2.00/$12.00 per million tokens (mid-tier), Gemini 3.5 Flash at $1.50/$9.00 per million tokens (fast / budget), Gemini 3 Flash at $0.50/$3.00 per million tokens (fast / budget), Gemini 3.5 Flash-Lite at $0.30/$2.50 per million tokens (fast / budget), Gemini 2.5 Computer Use at $1.25/$10.00 per million tokens (fast / budget), Gemini 2.5 Flash-Lite at $0.10/$0.40 per million tokens (fast / budget), Gemini 2.5 Pro at $1.25/$10.00 per million tokens (mid-tier), Gemini 3.1 Flash-Lite at $0.25/$1.50 per million tokens (fast / budget), Gemini 3.1 Pro Custom Tools at $2.00/$12.00 per million tokens (mid-tier), Gemini 3.6 Flash at $0.75/$3.75 per million tokens (fast / budget), Gemini 3.7 Flash at $0.75/$3.75 per million tokens (fast / budget), Gemini 3.8 Flash at $0.75/$3.75 per million tokens (fast / budget), Gemini Omni 1.1 Flash at $1.50/$9.00 per million tokens (fast / budget), Gemini Omni Flash at $1.50/$9.00 per million tokens (fast / budget), Gemini Robotics ER 2 at $1.00/$5.00 per million tokens (fast / budget). The right choice depends on whether your rag pipeline workload prioritizes quality, cost, or speed.

What context window does Gemini 2.5 Flash support?

Gemini 2.5 Flash supports a context window of 1,048.576K tokens per API call. This sets the maximum combined length of your input prompt and generated response. For rag pipeline, typical calls use 6,000 input and 1,500 output tokens. That is well within this limit, leaving room for longer prompts or multi-turn conversations.

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