API cost decision in 10 seconds

Google Gemini Flash Latest vs 🔥GPT-5.4

Pick Google Gemini Flash Latest for lower cost; pick GPT-5.4 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 Google Gemini Flash Latest for lower cost; pick GPT-5.4 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Google Gemini Flash Latest is estimated at $6 vs $10 for GPT-5.4, saving $4 (40% lower).

Cost-first pickGoogle Gemini Flash Latest
Context-first pickGPT-5.4
Sample savings$440%
10x traffic gap$40

GPT-5.4 has more context, but Google Gemini Flash Latest saves $4 on the standard workload. At 10x that traffic, the same price gap is about $40. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Google Gemini Flash Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGoogle Gemini Flash LatestGPT-5.4
Input-heavy / RAG 5M input + 500K output Google Gemini Flash Latest $12 $20
Balanced workload 1M input + 1M output Google Gemini Flash Latest $10.5 $17.5
Output-heavy chatbot 1M input + 5M output Google Gemini Flash Latest $46.5 $77.5
Cheaper inputGoogle Gemini Flash Latest$1.5 vs $2.5 / 1M
Cheaper outputGoogle Gemini Flash Latest$9 vs $15 / 1M
Larger contextGPT-5.41.05M vs 1.05M
Sample workloadGoogle Gemini Flash Latest$6 vs $10

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Google Gemini Flash LatestCalculating…Estimated API cost
GPT-5.4Calculating…Estimated API cost
Cheaper for this workloadCalculating…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

Google Gemini Flash Latest has the lower input price, Google Gemini Flash Latest has the lower output price, and GPT-5.4 offers the larger context window.

For a 1M input token plus 500K output token workload, the estimated API cost is $6 for Google Gemini Flash Latest and $10 for GPT-5.4.

Best Fit

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

Choose GPT-5.4 when you care most about larger context window.

Head-to-Head Specs
FeatureGoogle Gemini Flash Latest
(Google)		🔥GPT-5.4
(OpenAI)
Input Price
prompt tokens per 1M		$1.5$2.5
Completion Price
per 1M tokens		$9$15
Sample Workload Cost
1M input + 500K output		$6$10
Context Window1.05M1.05M
Release Date2026-04-272026-03-05
Popularity#19
Google Gemini Flash Latest

This model always redirects to the latest model in the Google Gemini Flash family.

GPT-5.4

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionGoogle Gemini Flash LatestOn the standard 1M input plus 500K output workload, Google Gemini Flash Latest is estimated at $6 vs $10 for GPT-5.4, saving $4 (40% lower).
High-volume input processingGoogle Gemini Flash LatestLower prompt-token price matters most when prompts or retrieved passages dominate the bill.
Long responses and chatbotsGoogle Gemini Flash LatestLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGPT-5.4A larger context window leaves more room for retrieved passages and source files.