GLM-5.3-Flash
- Next shutdown
- None setNo date on 2 platforms
- Arena Text
- 1,475#23 of 128 · Arena
- GPQA Diamond
- 90.2%#37 of 108 · Epoch AI
- List price · $ per 1M
- $0.15 in $0.50 outTogether AI · cached input $0.03
- Released
- Aug 26, 2026Z.ai (GLM)
Dates on every platform
2 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| Together AITogether AI: Changelog (opens in a new tab) · checked Oct 14, 2026 | zai-org/GLM-5.3-FlashActive | – | None set | – |
| Fireworks AIFireworks AI: GLM 5.3 Flash model page (opens in a new tab) · checked Oct 14, 2026 | accounts/fireworks/models/glm-5p3-flashActive | – | None set | – |
What breaks when you move off GLM-5.3-Flash
No breaking changes are recorded for GLM-5.3-Flash.
Intelligence
Third-party results, credited below
| Benchmark | Publisher | Score | Rank | Published |
|---|---|---|---|---|
| Arena Text | Arena | 1,475 ± 3 | #23 of 128 | Oct 8, 2026 |
| GPQA Diamond | Epoch AI | 90.2% ± 1.7% | #37 of 108 | Aug 26, 2026 |
| Arena WebDev | Arena | 1,609 ± 4 | #15 of 69 | Oct 8, 2026 |
| Arena Agent | Arena | -0 ± 0 | #28 of 35 | Oct 12, 2026 |
| FrontierMath Tier 4 | Epoch AI | 17.1% ± 5.9% | #43 of 58 | Aug 27, 2026 |
| FrontierMath Tiers 1-3 | Epoch AI | 55.8% ± 2.9% | #40 of 71 | Aug 27, 2026 |
| OTIS Mock AIME 2024-2025 | Epoch AI | 93.9% ± 2.2% | #37 of 105 | Aug 26, 2026 |
Arena (arena.ai), https://arena.ai/leaderboard
Epoch AI, ‘Capabilities & benchmarking’. Published online at epoch.ai. Retrieved from ‘https://epoch.ai/benchmarks’ [online resource].
List prices
$ per 1M tokens, with each price’s source
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
Together AIzai-org/GLM-5.3-Flash | $0.15 | $0.03 | $0.50 | Aug 26, 2026Current | Together AI: Available models (serverless) (opens in a new tab) |
Fireworks AIaccounts/fireworks/models/glm-5p3-flash | $0.15 | $0.03 | $0.50 | Oct 14, 2026Current · Standard serverless mode. Batch inference is billed at half the Standard rate; Priority, Fast and US-only endpoints cost more. | Fireworks AI: Serverless Pricing (opens in a new tab) |
Change history
ReleaseGLM-5.3 Flash arrives on Together serverlessTogether AI
zai-org/GLM-5.3-Flash is available on serverless with a context length of one million tokens, function calling and structured outputs.
- Platform
- Together AI
- Model
- GLM-5.3-Flash
Source: Together AI, Changelog (opens in a new tab); Together AI, Available models (serverless) (opens in a new tab)