API cost decision in 10 seconds

NewGrok 4.3 vs GPT Audio Mini

Pick GPT Audio Mini for lower cost; pick Grok 4.3 only if the larger context window matters more.

Pricing data updated: 2026-05-26T11:08:00Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick GPT Audio Mini for lower cost; pick Grok 4.3 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, GPT Audio Mini is estimated at $1.8 vs $2.5 for Grok 4.3, saving $0.7 (28% lower).

Cost-first pickGPT Audio Mini

Context-first pickGrok 4.3

Sample savings$0.728%

10x traffic gap$7

Grok 4.3 has more context, but GPT Audio Mini saves $0.7 on the standard workload. At 10x that traffic, the same price gap is about $7. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

GPT Audio Mini stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Grok 4.3	GPT Audio Mini
Input-heavy / RAG	5M input + 500K output	GPT Audio Mini	$7.5	$4.2
Balanced workload	1M input + 1M output	GPT Audio Mini	$3.75	$3
Output-heavy chatbot	1M input + 5M output	GPT Audio Mini	$13.75	$12.6

Cheaper input GPT Audio Mini $1.25 vs $0.6 / 1M

GPT Audio Mini is $0.65 cheaper per 1M input tokens (52% lower; 2.08x difference).

Cheaper output GPT Audio Mini $2.5 vs $2.4 / 1M

GPT Audio Mini is $0.1 cheaper per 1M output tokens (4% lower; 1.04x difference).

Larger context Grok 4.3 1M vs 128K

Grok 4.3 has 872K more context (7.81x larger).

Sample workload GPT Audio Mini $2.5 vs $1.8

GPT Audio Mini is $0.7 cheaper on the standard workload (28% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Grok 4.3 Calculating… Estimated API cost

GPT Audio Mini 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

GPT Audio Mini has the lower input price; GPT Audio Mini has the lower output price; Grok 4.3 offers the larger context window. For the 1M input plus 500K output sample, GPT Audio Mini is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $2.5 for Grok 4.3 and $1.8 for GPT Audio Mini.

Best Fit

Choose Grok 4.3 when you care most about larger context window.

Choose GPT Audio Mini 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, GPT Audio Mini is estimated at $1.8 vs $2.5 for Grok 4.3, saving $0.7 (28% lower).
GPT Audio Mini is $0.7 cheaper on the standard workload (28% lower).
GPT Audio Mini is $0.65 cheaper per 1M input tokens (52% lower; 2.08x difference).
GPT Audio Mini is $0.1 cheaper per 1M output tokens (4% lower; 1.04x difference).
Grok 4.3 has 872K more context (7.81x larger).

Head-to-Head Specs

Feature	NewGrok 4.3 (xAI)	GPT Audio Mini (OpenAI)
Input Price prompt tokens per 1M	$1.25	$0.6
Completion Price per 1M tokens	$2.5	$2.4
Sample Workload Cost 1M input + 500K output	$2.5	$1.8
Context Window	1M	128K
Release Date	2026-04-30	2026-01-19

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	GPT Audio Mini	On the standard 1M input plus 500K output workload, GPT Audio Mini is estimated at $1.8 vs $2.5 for Grok 4.3, saving $0.7 (28% lower).
High-volume input processing	GPT Audio Mini	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	GPT Audio Mini	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Grok 4.3	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Grok Build 0.1 can replace Grok 4.3 when lower sample workload cost matters most: $2.
gpt-oss-120b (free) can replace GPT Audio Mini when lower sample workload cost matters most: $0.
gpt-oss-20b (free) can replace GPT Audio Mini when lower sample workload cost matters most: $0.
gpt-oss-20b can replace GPT Audio Mini when lower sample workload cost matters most: $0.1.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
Owl Alpha offers 1.05M context with $0 sample workload cost.
Gemini 3.1 Flash Lite offers 1.05M context with $1 sample workload cost.

Popular competitors

No popular competitor is currently available.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

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Larger context alternatives

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Provider catalogs

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xAI catalog

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OpenAI catalog

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

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Grok 4.3

Grok 4.3 is a reasoning model from xAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...

GPT Audio Mini

A cost-efficient version of GPT Audio. The new snapshot features an upgraded decoder for more natural sounding voices and maintains better voice consistency. Input is priced at $0.60 per million...