Gemini 3.7 Flash vs GLM-5.3
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
| Specification |
Gemini 3.7 FlashIntro price
by Google
|
by Z.AI
|
|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | Aug 13, 2026 | Aug 14, 2026 |
| Pricing per million tokens | ||
| Input | $0.750/Mtok | $1.40/Mtok |
| Output | $3.75/Mtok | $4.40/Mtok |
| Blended avg | $1.50/Mtok | $2.15/Mtok |
| Cached input | $0.075/Mtok | $0.260/Mtok |
| Price basis | Google's Gemini API pricing page prints a dated, two-phase schedule for this model: $0.75 per 1M input tokens through December 31, 2026, rising to $1.50 on January 1, 2027, and $3.75 per 1M output tokens through December 31, 2026, rising to $7.50. Context caching follows the same dates ($0.075, then $0.15). We publish the rate you would pay today and re-verify it before the changeover date. Note that resellers may quote a lower figure: OpenRouter's default route for this model shows $0.375/$1.875, which is Google's batch service tier rather than the standard rate. Checked 2026-08-18 against ai.google.dev/gemini-api/docs/pricing. | — |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimageaudiovideo
|
text
|
| Benchmarks sources: Vellum LLM Leaderboard / Artificial Analysis | ||
| Independent composite scores measured for both models — each on its own scale | ||
| AA Intelligence Index | 56 | 59.5 |
| AA Agentic Index | 45.1 | 59.1 |
| AA-Omniscience Index (−100–100) | 26.5 | 14.3 |
| GDPval-AA v2 | 1531.5 ELO | 1769 ELO |
| LMSYS Chatbot Arena | 1490.4 ELO | — |
| Per-benchmark results published for Gemini 3.7 Flash only — no independent per-benchmark scores exist for GLM-5.3 yet | ||
| Avg benchmark score | 85.8 | — |
| Perf / dollar | 57.2 | — |
| Terminal-Bench 2.1 | 85.8 | — |
| AutoBench | 30.4 | — |
| Providers | ||
| Available from |
Google — $0.750/$3.75/Mtok
|
Z.AI — $1.40/$4.40/Mtok
|
Cost at scale
1M tokens · 50/50 input/output| Volume | Gemini 3.7 Flash | GLM-5.3 | Savings |
|---|---|---|---|
| 1M tokens | $1.5 | $2.15 | $0.65 (30.2%) |
| 10M tokens | $15 | $21.5 | $6.5 (30.2%) |
| 100M tokens | $150 | $215 | $65 (30.2%) |
| 1000M tokens | $1500 | $2150 | $650 (30.2%) |
When to pick which
distilled from the pricing and spec data above- cost dominates: $1.50/Mtok blended vs $2.15 — 30.2% less on the same 50/50 token mix
- your workload re-reads context (agents, RAG, long chats): cached input costs $0.075/Mtok — 90% off its list input price
- this pairing gives GLM-5.3 no edge on price, context, cache discount, or measured performance — pick it only for qualitative fit (ecosystem, compliance, model behavior on your prompts)
The cheaper option here — Gemini 3.7 Flash costs $1.50/Mtok blended on Google.
Summary
Gemini 3.7 Flash by Google costs $0.750/Mtok input and $3.75/Mtok output, with a 1M-token context window. It supports text, image, audio, video input.
GLM-5.3 by Z.AI costs $1.40/Mtok input and $4.40/Mtok output, with a 1M-token context window. It supports text input.
On a blended cost basis, Gemini 3.7 Flash is 30.2% cheaper than GLM-5.3.
The two aren't directly comparable on average benchmark score: Gemini 3.7 Flash has published per-benchmark results, while GLM-5.3 does not yet — it is measured today on independent composites (see the table above).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.