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GLM-5vsGPT-5.6 Terra

GPT-5.6 Terra leads 2 of 2 shared benchmarks. GLM-5 is 3.3x cheaper per token. GPT-5.6 Terra has the larger context window (1.1M tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
0 – 2
GPT-5.6 Terra leads
Cheaper per token
GLM-5
3.3x cheaper, input + output
Larger context
GPT-5.6 Terra
1.1M tokens
Provider uptime (30d)
— · 95.4802%
Z.ai · OpenAI
GLM-5
Z.ai
text
Context
200K
Max out
131K
Input /1M
$1
Output /1M
$3.2
Cached /1M
$0.2
Scores
8 · 7 core
GPT-5.6 Terra
OpenAI · released 2026-07-09
textvision
Context
1.1M
Max out
128K
Input /1M
$2
Output /1M
$12
Cached /1M
$0.2
Scores
8 · 6 core
Quality

Benchmark matrix

BenchmarkGLM-5GPT-5.6 TerraΔEdge
Reported by both · 2
GPQA Diamond87.8% epoch92.9% -5.1 ptGPT-5.6 Terra
OTIS Mock AIME 2024-2025 (Epoch AI run)80% epoch99.7% epoch-19.7 ptGPT-5.6 Terra
Only GLM-5 reports · 6
SWE-bench Verified77.8% not reported
AIME 202596.7% matharenanot reported
AIME 202696.7% matharenanot reported
LMArena Elo1446.3 not reported
SWE-bench Verified (Epoch AI run)72.1% epochnot reported
Terminal-Bench 2.056.2% not reported
Only GPT-5.6 Terra reports · 5
DeepSWE v1.1not reported69.6%
FrontierMath Tier 4 v2 (Epoch AI run)not reported70.7% epoch
FrontierMath Tiers 1-3 v2 (Epoch AI run)not reported86% epoch
SimpleQA Verifiednot reported43.2% epoch
SWE-Bench Pronot reported63.4%
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GLM-5 minus GPT-5.6 Terra in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing

Side by side

SpecGLM-5GPT-5.6 TerraEdge
Context window200K tokens1.1M tokensGPT-5.6 Terra
Max output131K tokens128K tokensGLM-5
Input price / 1M$1 $2 GLM-5
Output price / 1M$3.2 $12 GLM-5
Cached input / 1M$0.2 $0.2 Tie
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$4.2$14GLM-5
Modalitiestexttext · visionGPT-5.6 Terra
Released2026-07-09
Cited benchmark scores88
Reliability

Provider status

All providers
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