API cost decision in 10 seconds

GLM 5 Turbo vs 🔥GPT-5.4

Pick GLM 5 Turbo for lower cost; pick GPT-5.4 only if the larger context window matters more.

Pricing data updated: 2026-05-26 12:50 UTC Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick GLM 5 Turbo for lower cost; pick GPT-5.4 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, GLM 5 Turbo is estimated at $3.2 vs $10 for GPT-5.4, saving $6.8 (68% lower).

Cost-first pickGLM 5 Turbo

Context-first pickGPT-5.4

Sample savings$6.868%

10x traffic gap$68

GPT-5.4 has more context, but GLM 5 Turbo saves $6.8 on the standard workload. At 10x that traffic, the same price gap is about $68. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

GLM 5 Turbo stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	GLM 5 Turbo	GPT-5.4
Input-heavy / RAG	5M input + 500K output	GLM 5 Turbo	$8	$20
Balanced workload	1M input + 1M output	GLM 5 Turbo	$5.2	$17.5
Output-heavy chatbot	1M input + 5M output	GLM 5 Turbo	$21.2	$77.5

Cheaper inputGLM 5 Turbo$1.2 vs $2.5 / 1M

Cheaper outputGLM 5 Turbo$4 vs $15 / 1M

Larger contextGPT-5.4202.75K vs 1.05M

Sample workloadGLM 5 Turbo$3.2 vs $10

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokensMonthly output tokens

GLM 5 TurboCalculating…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

GLM 5 Turbo has the lower input price, GLM 5 Turbo 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 $3.2 for GLM 5 Turbo and $10 for GPT-5.4.

Best Fit

Choose GLM 5 Turbo 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

Feature	GLM 5 Turbo (Z.ai)	🔥GPT-5.4 (OpenAI)
Input Price prompt tokens per 1M	$1.2	$2.5
Completion Price per 1M tokens	$4	$15
Sample Workload Cost 1M input + 500K output	$3.2	$10
Context Window	202.75K	1.05M
Release Date	2026-03-15	2026-03-05
Popularity		#19

GLM 5 Turbo

GLM-5 Turbo is a new model from Z.ai designed for fast inference and strong performance in agent-driven environments such as OpenClaw scenarios. It is deeply optimized for real-world agent workflows...

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 case	Better pick	Why
Budget-constrained production	GLM 5 Turbo	On the standard 1M input plus 500K output workload, GLM 5 Turbo is estimated at $3.2 vs $10 for GPT-5.4, saving $6.8 (68% lower).
High-volume input processing	GLM 5 Turbo	Lower prompt-token price matters most when prompts or retrieved passages dominate the bill.
Long responses and chatbots	GLM 5 Turbo	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	GPT-5.4	A larger context window leaves more room for retrieved passages and source files.