Patchwire

Z.ai · Released Aug 26, 2026

GLM 5.3 Flash

GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while...

ReasoningOpen weightsVision
  • Top 23%WebDev Arena
  • Top 39%CritPt
  • Top 40%ARC-AGI-2
  • Top 42%GPQA Diamond
Compare in showdown → OpenRouter ↗ All Z.ai models
Released
Aug 26 2026
Context window
1M 944K out
Input / 1M tokens
$0.047
Output / 1M tokens
$0.16

Where to run it

30 providers compared

Cheapest: OpenInference at $0.047 / $0.16 per 1M input / output tokens — 83% less than the priciest option.

ProviderInputOutputCache readContextMax outputUptimevs. best
OpenInferenceFP4 $0.047 $0.16 $0.0061M944K100%24h Cheapest
StreamLakeFP8 $0.059 $0.20 $0.0121.02M128K92.6%24h +24%
Wafernvfp4 · NVFP4 $0.059 $0.20 $0.0581M131K100%24h +25%
DeepInfraFP4 $0.075 $0.25 $0.0151M944K100%24h +58%
GMICloudFP8 $0.075 $0.25 $0.0151M944K98.6%24h +58%
NovitaFP8 $0.084 $0.28 $0.0171M131K93.5%24h +77%
Sail Researchus · FP4 $0.078 $0.30 $0.0521M131K100%24h +77%
Sail ResearchFP4 $0.078 $0.30 $0.0521M131K100%24h +77%
Relace $0.075 $0.50 $0.0081M131K93.6%24h +141%
Near AIFP8 $0.08 $0.50 $0.0121M944K99.5%24h +146%
InferenceNetFP4 $0.12 $0.39 $0.0321M262K100%24h +149%
NextBitFP4 $0.12 $0.40 $0.041M128K100%24h +152%
Phalanvfp4 · NVFP4 $0.13 $0.42 $0.0261M131K97.3%24h +169%
DigitalOcean $0.13 $0.44 $0.031M131K99.7%24h +176%
Makora $0.14 $0.47 $0.0241M131K99.5%24h +196%
Modalnvfp4 · NVFP4 $0.15 $0.50 $0.031M944K100%24h +216%
CrusoeFP4 $0.15 $0.50 $0.031M944K100%24h +216%
CoreWeavenvfp4 · NVFP4 $0.15 $0.50 $0.021M944K100%24h +216%
PrimeIntellect $0.15 $0.50 $0.031M131K99.9%24h +216%
Z.AIFP8 $0.15 $0.50 $0.031M131K99.9%24h +216%
Together $0.15 $0.50 $0.031.05M944K99.1%24h +216%
Friendli $0.15 $0.50 $0.031M944K98.1%24h +216%
ParasailFP4 $0.15 $0.50 $0.031M944K98.1%24h +216%
Venice $0.15 $0.50 $0.031M131K96.8%24h +216%
SiliconFlowFP8 $0.15 $0.50 $0.031M262K95.8%24h +216%
BaseTenus · FP8 $0.15 $0.50 $0.031M131K95.3%24h +216%
Fireworks $0.15 $0.50 $0.031M944K94.1%24h +216%
BaseTenFP8 $0.15 $0.50 $0.031M131K94.1%24h +216%
AtlasCloudFP8 $0.15 $0.50 $0.031M131K91.6%24h +216%
InceptronFP8 $0.10 $0.69 $0.0751M944K99.5%24h +229%
MorphFP8 $0.15 $0.65 $0.0411M944K100%24h +263%
Parasailfast · FP4 $0.19 $0.63 $0.0381M944K97.7%24h +295%
Fireworksus $0.23 $0.75 $0.0451M944K100%24h +373%
Reka $0.06 $1.60 $0.041M944K100%24h +491%

Value

Price vs. performance

On the value frontierNo cheaper model beats GLM 5.3 Flash on GPQA Diamond.
25.3%49.0%72.7%96.4% $0.01$0.10$1.00$10.00$100.00 DeepSeek V4.1 Flash 1017 (DeepSeek) — 89.8% · $0.30/1M in Gemini 4 Argon (Google) — 96.4% · $2.00/1M in Claude Haiku 5.5 (Anthropic) — 89.6% · $0.10/1M in Mistral Large 4 (Mistral) — 88.1% · $0.68/1M in GPT-6.1 Sol (OpenAI) — 95.4% · $2.00/1M in Claude Sonnet 5.5 (Anthropic) — 95.6% · $2.00/1M in GPT-6 Luna (OpenAI) — 90.5% · $0.10/1M in GPT-6 Sol (OpenAI) — 94.3% · $2.00/1M in Claude Opus 5.5 (Anthropic) — 90.6% · $4.00/1M in Grok 4.7 (xAI) — 92.7% · $2.00/1M in DeepSeek V4.1 Flash (DeepSeek) — 89.8% · $0.056/1M in GPT-6 Astra (OpenAI) — 95.8% · $10.00/1M in Qwen3.8 Max (0902) (Qwen) — 92.7% · $2.00/1M in Gemini 3.8 Flash (Google) — 95.4% · $0.82/1M in Gemini 3.7 Flash (Google) — 94.8% · $0.75/1M in DeepSeek V4 Pro 0813 (DeepSeek) — 91.7% · $0.66/1M in Grok 4.6 (xAI) — 94.0% · $2.00/1M in DeepSeek V4 Flash 0731 (DeepSeek) — 91.0% · $0.44/1M in Qwen3.7 Flash (Qwen) — 82.3% · $0.03/1M in Claude Opus 5 (Anthropic) — 93.9% · $5.00/1M in Gemini 3.6 Flash (Google) — 94.1% · $0.75/1M in Gemini 3.5 Flash Lite (Google) — 83.3% · $0.30/1M in Kimi K3 (Moonshot AI) — 93.1% · $0.24/1M in GPT-5.6 Luna (OpenAI) — 91.6% · $0.20/1M in GPT-5.6 Terra (OpenAI) — 93.3% · $2.00/1M in GPT-5.6 Sol (OpenAI) — 93.5% · $4.00/1M in Grok 4.5 (xAI) — 93.4% · $2.00/1M in Claude Sonnet 5 (Anthropic) — 90.5% · $2.00/1M in Kimi K2.7 Code (Moonshot AI) — 87.9% · $0.67/1M in Claude Fable 5 (Anthropic) — 85.9% · $10.00/1M in Qwen3.7 Plus (Qwen) — 87.9% · $0.32/1M in MiniMax M3 (MiniMax) — 90.9% · $0.30/1M in Claude Opus 4.8 (Anthropic) — 91.0% · $5.00/1M in Qwen3.7 Max (Qwen) — 90.9% · $1.48/1M in Gemini 3.5 Flash (Google) — 92.8% · $1.50/1M in Gemini 3.1 Flash Lite (Google) — 81.8% · $0.25/1M in Grok 4.3 (xAI) — 88.8% · $1.25/1M in Qwen3.5 Plus 2026-04-20 (Qwen) — 84.9% · $0.30/1M in Qwen3.6 Flash (Qwen) — 83.3% · $0.19/1M in Qwen3.6 35B A3B (Qwen) — 84.9% · $0.10/1M in Qwen3.6 27B (Qwen) — 85.9% · $0.25/1M in GPT-5.5 (OpenAI) — 90.7% · $5.00/1M in DeepSeek V4 Pro 0423 (DeepSeek) — 91.7% · $0.95/1M in DeepSeek V4 Flash 0423 (DeepSeek) — 91.0% · $0.091/1M in Kimi K2.6 (Moonshot AI) — 90.8% · $0.65/1M in Claude Opus 4.7 (Anthropic) — 90.1% · $5.00/1M in Gemma 4 26B A4B (Google) — 73.2% · $0.09/1M in Gemma 4 31B (Google) — 75.8% · $0.20/1M in Qwen3.6 Plus (Qwen) — 88.4% · $0.33/1M in GPT-5.4 Nano (OpenAI) — 78.5% · $0.20/1M in GPT-5.4 Mini (OpenAI) — 86.9% · $0.75/1M in Mistral Small 4 (Mistral) — 47.5% · $0.15/1M in Qwen3.5-9B (Qwen) — 79.0% · $0.10/1M in GPT-5.4 Pro (OpenAI) — 94.6% · $30.00/1M in GPT-5.4 (OpenAI) — 93.3% · $2.50/1M in Gemini 3.1 Flash Lite Preview (Google) — 81.8% · $0.25/1M in Qwen3.5-35B-A3B (Qwen) — 83.5% · $0.15/1M in Gemini 3.1 Pro Preview (Google) — 94.4% · $2.00/1M in Claude Sonnet 4.6 (Anthropic) — 87.4% · $3.00/1M in Qwen3.5 397B A17B (Qwen) — 86.4% · $0.39/1M in Claude Opus 4.6 (Anthropic) — 90.5% · $5.00/1M in Gemini 3 Flash Preview (Google) — 89.4% · $0.50/1M in GPT-5.2 (OpenAI) — 91.4% · $1.75/1M in Ministral 3 8B 2512 (Mistral) — 27.2% · $0.15/1M in Ministral 3 3B 2512 (Mistral) — 25.3% · $0.10/1M in Mistral Large 3 2512 (Mistral) — 51.3% · $0.50/1M in Claude Opus 4.5 (Anthropic) — 86.1% · $5.00/1M in GPT-5.1 (OpenAI) — 87.6% · $1.25/1M in Claude Haiku 4.5 (Anthropic) — 71.2% · $1.00/1M in Claude Sonnet 4.5 (Anthropic) — 82.3% · $3.00/1M in GPT-5 (OpenAI) — 86.2% · $1.25/1M in GPT-5 Mini (OpenAI) — 75.0% · $0.25/1M in GPT-5 Nano (OpenAI) — 69.4% · $0.05/1M in gpt-oss-120b (OpenAI) — 75.8% · $0.15/1M in gpt-oss-20b (OpenAI) — 60.8% · $0.018/1M in Claude Opus 4.1 (Anthropic) — 77.3% · $15.00/1M in Qwen3 30B A3B Instruct 2507 (Qwen) — 55.6% · $0.09/1M in Qwen3 235B A22B Thinking 2507 (Qwen) — 80.0% · $0.45/1M in Qwen3 235B A22B Instruct 2507 (Qwen) — 70.7% · $0.09/1M in Gemini 2.5 Pro (Google) — 85.3% · $1.25/1M in Gemini 2.5 Pro Preview 06-05 (Google) — 85.3% · $1.25/1M in R1 0528 (DeepSeek) — 76.3% · $0.50/1M in Qwen3 30B A3B (Qwen) — 61.7% · $0.12/1M in Qwen3 14B (Qwen) — 63.8% · $0.12/1M in Qwen3 32B (Qwen) — 65.7% · $0.08/1M in GLM 5.3 (Z.ai) — 90.9% · $0.079/1M in GLM 5.2 (Z.ai) — 91.9% · $0.62/1M in GLM 5.1 (Z.ai) — 89.9% · $0.97/1M in GLM 5 (Z.ai) — 87.8% · $0.60/1M in GLM 4.7 Flash (Z.ai) — 60.5% · $0.061/1M in GLM 4.7 (Z.ai) — 83.3% · $0.54/1M in GLM 5.3 Flash (Z.ai) — 90.1% · $0.047/1M in GLM 5.3 Flash

GLM 5.3 Flash Other Z.ai Other labs Value frontier · GPQA Diamond vs. input price per 1M tokens (log scale) · Drag to pan, pinch or Ctrl + scroll to zoom, double-click to zoom in.

Benchmarks

17 benchmark scores

BenchmarkScoreRankLeader
FrontierSWESoftware engineering · Ultra-long-horizon engineering tasks with a 20-hour budget each 18.1% #17of 19 GPT-6 Astra65.5%
DeepSWESoftware engineering · Original long-horizon tasks across active open-source repos 63.4% #13of 26 GPT-6 Astra74.1%
CursorBenchSoftware engineering · Ambiguous multi-file tasks drawn from real Cursor sessions 36.8% #14of 16 Claude Opus 5.557.8%
FrontierCodeSoftware engineering · Mergeable fixes for hard open-source issues 31.8% #30of 41 Claude Opus 5.554.6%
SciCodeSoftware engineering · Research-coding problems from the natural sciences 51.6% #41of 93 Claude Opus 5.566.9%
APEX-AgentsAgents & computer use · Long professional tasks in banking, consulting and law 52.8% #23of 51 Gemini 4 Argon82.4%
GDP.pdfWriting & content · Answer questions about real professional PDFs 14.0% #31of 38 GPT-6.1 Sol35.0%
WebDev ArenaDesign & visual · People vote on which model builds the better website (Elo) 1607 #20of 88 Claude Opus 5.51820
GPQA DiamondReasoning & knowledge · PhD-level biology, chemistry and physics questions 90.1% #38of 92 Gemini 4 Argon96.4%
ARC-AGI-2Reasoning & knowledge · Few-shot abstract reasoning on grid puzzles 65.8% #25of 63 GPT-6 Astra95.0%
ARC-AGI-1Reasoning & knowledge · Pattern induction from input–output examples 91.0% #26of 63 Gemini 4 Argon98.5%
CritPtReasoning & knowledge · Open-ended, research-level physics problems 15.4% #37of 96 GPT-5.6 Sol32.3%
Chess PuzzlesReasoning & knowledge · Find the single best move in 100 new puzzles 21.0% #56of 70 GPT-6 Astra76.0%
FrontierMathMaths · Expert-written problems, undergrad to early research (tiers 1–3) 55.8% #46of 72 GPT-6.1 Sol93.7%
FrontierMath Tier 4Maths · Exceptionally hard research-level problems 17.1% #48of 62 GPT-6.1 Sol100.0%
ProofBenchMaths · Graduate maths proofs verified in Lean 4 21.0% #51of 70 Claude Sonnet 5.5100.0%
OTIS Mock AIMEMaths · Competition-style problems harder than MATH Level 5 93.9% #43of 90 Gemini 4 Argon100.0%

Specs

Details

Model ID
z-ai/glm-5.3-flash
Developer
Z.ai
Release date
Aug 26, 2026 ·
Context window
1,048,576 tokens
Max output
943,718 tokens
API price
$0.047 / $0.16 per 1M input / output tokens
Providers
30
Input types
text, image, video
Reasoning
Yes
Tool calling
Yes
Open weights
Yes
Free tier
No

Release date, prices and providers from OpenRouter's catalog; buying directly from a provider can cost a little differently. Uptime is the share of OpenRouter requests each provider served over the last day. Benchmark scores are the best result per benchmark from Epoch AI, licensed CC BY 4.0. Rank counts every model tracked here with a score.