DeepSeek-V4-Flash vs GLM-5.3
Wins 0 of 7 areas
—
Wins 6 of 7 areas
Coding · Agents · Reasoning · Facts · Math · Following instructions
GLM-5.3 is the stronger all-rounder.DeepSeek-V4-Flash is cheaper.
Scores updated · 38 tests both models report · How we compare
Where each one wins
Tests won in each of the seven areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software05GLM-5.35 of 5 tests
- AgentsCarrying out multi-step tasks on its own04GLM-5.34 of 4 tests
- ReasoningHard problems that need careful thinking03GLM-5.33 of 5 tests · 2 ties
- MathCompetition and research-level math03GLM-5.33 of 3 tests
- FactsGetting facts right instead of making them up12GLM-5.32 of 3 tests
- Following instructionsDoing exactly what it is asked01GLM-5.31 of 1 test
- Long documentsFinding answers in very long texts00Even0 each · 1 tie
Long documents and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
DeepSeek-V4-Flash costs 93% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where GLM-5.3 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+62.1points ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+29.8points ahead
- Common-sense trick questionsSimpleBench+19.9points ahead
Where DeepSeek-V4-Flash pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+6.5points ahead
Every test, side by side
All 38 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGLM-5.3
- LMArena · WebDevGLM-5.3 by 191 rating points14311622+191 rating
- LiveBench · Agentic CodingGLM-5.3 by 14.146.860.9+14.1
- SciCodeGLM-5.3 by 8.750.359+8.7
- Terminal-Bench 2.1GLM-5.3 by 5.278.783.9+5.2
- LiveBench · CodingGLM-5.3 by 47579+4
AgentsGLM-5.3
- Terminal-Bench 4.0GLM-5.3 by 29.812.141.9+29.8
- AA IT-Bench SREGLM-5.3 by 14.631.546.1+14.6
- τ-Bench V3 · BankingGLM-5.3 by 10.939.450.3+10.9
- GDPValGLM-5.3 by 10.846.757.5+10.8
ReasoningGLM-5.3
- SimpleBenchGLM-5.3 by 19.946.366.2+19.9
- Humanity's Last ExamGLM-5.3 by 3.738.642.3+3.7
- CritPtGLM-5.3 by 2.516.619.1+2.5
- GPQA Diamondtie90.891.7tie
- LiveBench · Reasoningtie86.685.8tie
FactsGLM-5.3
- AA-Omniscience · Non-hallucinationGLM-5.3 by 62.18.370.4+62.1
- SimpleQA VerifiedGLM-5.3 by 6.934.141+6.9
- AA-Omniscience · AccuracyDeepSeek-V4-Flash by 6.540.433.9+6.5
MathGLM-5.3
- FrontierMath Tiers 1-3 (v2)GLM-5.3 by 11.357.568.8+11.3
- FrontierMath Tier 4GLM-5.3 by 4.924.429.3+4.9
- LiveBench · MathematicsGLM-5.3 by 1.186.887.9+1.1
Following instructionsGLM-5.3
- LiveBench · Instruction FollowingGLM-5.3 by 3.865.569.3+3.8
Other results16 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- GDPval-AA v2GLM-5.3 by 580 rating points11891769+580 rating
- AA-OmniscienceGLM-5.3 by 28.6-14.314.3+28.6
- HLE (with tools)GLM-5.3 by 17.445.162.5+17.4
- DeepSWEGLM-5.3 by 12.554.466.9+12.5
- DeepSWE 1.1GLM-5.3 by 12.554.466.9+12.5
- AA Agentic IndexGLM-5.3 by 11.741.753.4+11.7
- AA IntelligenceGLM-5.3 by 10.534.344.8+10.5
- HiL-Bench (Tools-allowed)GLM-5.3 by 10.547.858.3+10.5
- livebench_data_analysisDeepSeek-V4-Flash by 9.179.370.2+9.1
- CyberGymGLM-5.3 by 7.876.784.5+7.8
- Artificial Analysis Coding IndexGLM-5.3 by 5.769.174.8+5.7
- NL2RepoGLM-5.3 by 3.854.258+3.8
- Agents' Last ExamGLM-5.3 by 3.325.228.5+3.3
- ToolathlonGLM-5.3 by 2.770.373+2.7
- Toolathlon VerifiedGLM-5.3 by 2.770.373+2.7
- livebench_languagetie79.279.9tie
Questions people ask
Which is better, DeepSeek-V4-Flash or GLM-5.3?
GLM-5.3 wins six of the seven areas where both have results: coding, agents, reasoning, facts, math and following instructions. DeepSeek-V4-Flash wins none, but costs 93% less. They are level on long documents.
Which is better for coding?
GLM-5.3. It wins 5 of the 5 coding tests both models report; DeepSeek-V4-Flash wins none.
Which is cheaper?
DeepSeek-V4-Flash costs $0.14 per million input tokens and $0.28 per million output tokens; GLM-5.3 costs $1.40 and $4.40. That makes DeepSeek-V4-Flash about 93% cheaper for the same work.
How do you compare the two?
We use the 38 benchmark tests both models have published scores on. The verdict counts the 22 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 16 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.