DeepSeek 网摘DeepSeek V4.1-Flash vs GPT-6.1 Sol vs GLM-5.3-Flash: Picking a Workhorse
All three vendors run a "fast and frugal" line: DeepSeek's V4.1-Flash (Sept 10), OpenAI's GPT-6.1 Sol (Sept 29) and Zhipu's GLM-5.3-Flash (Aug 26). A positioning comparison from public information; check each vendor's page for current pricing (as of publication).
| Dimension | DeepSeek V4.1-Flash | GPT-6.1 Sol | GLM-5.3-Flash |
|---|---|---|---|
| Released | 2026-09-10 | 2026-09-29 | 2026-08-26 |
| Positioning | General + native vision | Budget tier: near-Astra intelligence at about a fifth of the price (OpenAI's wording) | Lightweight member of the GLM-5.3 line, coding-focused |
| Context / output | 1M / 384K | See official page | See official page |
| Price (per 1M tokens) | Off-peak $0.15 in, $0.60 out; $0.003 cache hit | See official page | See official page |
| Open weights | MIT | No | See release page |
Price lens
DeepSeek is the transparent one of the three: peak/off-peak billing plus a $0.003 cache-hit input rate makes high-throughput bills predictable (see the pricing explainer). GPT-6.1 Sol's official line is "near-Astra intelligence at about a fifth of the price," with unit prices varying by plan; GLM-5.3-Flash serves the domestic ecosystem, priced on Zhipu's platform.
Capability and ecosystem
V4.1-Flash's differentiators are native vision and a 1M context, with both OpenAI- and Anthropic-format endpoints, so coding agents hook up cheaply. GPT rides OpenAI's toolchain and the English ecosystem; GLM-5.3's strength is coding — Zhipu bills GLM-5.3 as frontier coding, and GLM-5.2 beat Claude in a third-party security firm's eval.
How to choose
- Cost-sensitive / Chinese-language / self-hosted: V4.1-Flash, with MIT weights for private deployment;
- Deep in the OpenAI ecosystem: GPT-6.1 Sol, less migration friction;
- Domestic coding teams: give GLM-5.3-Flash a seat at the test.
Further reading: DeepSeek vs GPT-6, alternatives check-in.