Quick Verdict
IIT Delhi has the edge on raw academic scale and standing: a bigger faculty body, a larger annual budget, and a consistently higher NIRF Engineering rank (2nd, versus IIT Guwahati's 7th-8th) across recent years. But IIT Guwahati (IITG) is not a distant second on quality — it runs a lower student-to-faculty ratio by the numbers available, and has built out a wide spread of specialized schools (Business, AI/Data Science, Energy, Health Sciences) atop its core engineering departments. Indian Institute of Technology (IIT) Delhi wins on institutional heft; IIT Guwahati (IITG) is a strong pick if you value smaller class sizes and a more interdisciplinary academic structure.
Snapshot
| Metric | IIT Delhi | IIT Guwahati |
|---|---|---|
| Established | 1961 (one of the original four post-Sarkar Committee IITs) | 1994, under the Assam Accord |
| Faculty count | 687 | 539 (source) |
| Student count | 12,543 | 7,849 (source) |
| Students-per-faculty (computed from the above) | ~18.3 | ~14.6 (source) |
| Annual budget | ₹904.91 crore (~US$95 million) | ₹442.38 crore (~US$46 million) (source) |
| NIRF Engineering Rank (2022-2024, consistent) | 2 | 7 (source) |
| NIRF Engineering Rank 2025 | 2 | 8 (source) |
| Current Director / leadership note | Rangan Banerjee, Director since 15 Feb 2022 (source) | Not available in sources |
| MBA/PGDM student-faculty ratio (Delhi's Dept. of Management Studies) | 6:1 (source) | Not available in sources |
Detailed Analysis
By sheer scale, IIT Delhi is the bigger academic operation: 687 faculty members against 12,543 students, backed by an annual budget of roughly ₹905 crore. It has also held the No. 2 spot in the NIRF Engineering ranking every year from 2022 to 2025, trailing only IIT Madras. As one of the four original campuses set up on the recommendation of the Sarkar Committee in 1961 (alongside Bombay, Madras, and Kanpur), it has three decades of head start over IIT Guwahati in building out research groups, faculty seniority, and academic infrastructure.
IIT Guwahati, established in 1994 under the Assam Accord as the newer of this pair, runs smaller in absolute terms — 539 faculty and 7,849 students, with roughly half of Delhi's budget. But run the numbers and IITG's students-per-faculty figure (~14.6) comes out lower than Delhi's (~18.3), meaning — at least on these raw headcounts — an IITG student has access to relatively more faculty attention than a Delhi student does. IITG has also broadened well past a classic engineering curriculum: alongside standard departments like Computer Science and Engineering, Civil Engineering, and Physics, it now runs dedicated schools for Business, Data Science and AI, Energy Science, and Health Sciences and Technology, giving it a more interdisciplinary academic footprint than its size alone would suggest. One source calls it "not as famous as IIT Delhi or Madras" but notes it's still ranked quite high for engineering programmes.
At the postgraduate level, both institutes run comparable M.Tech admission tracks: both accept GATE plus COAP counseling, both require a bachelor's degree and a master's with at least 60% marks (55% for SC/ST/PwD candidates), and both allow direct M.Tech admission (as a Teaching Assistant) for any IIT B.Tech graduate with a CPI of 8.0 or higher, without needing a GATE score (source). IIT Delhi additionally accepts JEE Main or JEE Advanced scores as a route into some M.Tech programs, per the same comparison. For its MBA/PGDM (run through IIT Delhi's Department of Management Studies), one former student describes the program as "super competitive" with a student-to-faculty ratio of 6:1 and recommends targeting a 90-95 percentile in CAT to secure a seat — no comparable MBA-specific ratio is available for IIT Guwahati in our sources.
It's worth noting that IIT-wide, faculty-to-student ratios are governed centrally: the IIT Council's Standing Committee (SCIC) prescribes a minimum ratio of 1:9 department-wise, with the actual system-wide ratio across all IITs falling between 1:6 and 1:8 — both institutes in this comparison operate within a shared regulatory framework rather than setting their own standards independently.
Verdict
IIT Delhi wins on faculty and academics for readers who weight institutional scale, seniority, and national ranking — it has more faculty, a larger budget, and a higher NIRF Engineering position sustained over several years. Choose IIT Guwahati instead if you want a lower student-to-faculty ratio (by the raw headcounts available) or if you're drawn to its newer interdisciplinary schools in AI/Data Science, Energy, or Health Sciences, which sit outside the classic engineering-department mold that dominates at Delhi.
Frequently Asked Questions
Q: Which IIT has more faculty, Delhi or Guwahati?
A: IIT Delhi, with 687 faculty members versus IIT Guwahati's 539.
Q: Which institute has a better student-to-faculty ratio?
A: Based on sourced headcounts, IIT Guwahati's ratio (~14.6 students per faculty member) is lower than IIT Delhi's (~18.3), though neither institute publishes this ratio directly — it's computed from faculty and student counts.
Q: Is IIT Delhi older than IIT Guwahati?
A: Yes — IIT Delhi was established in 1961 as one of the original four IITs; IIT Guwahati was established in 1994 under the Assam Accord.
Q: Does IIT Guwahati offer non-engineering academic programs?
A: Yes — it runs dedicated schools for Business, Data Science and AI, Energy Science and Engineering, and Health Sciences and Technology, alongside its core engineering departments.
Q: How do M.Tech admissions compare between the two?
A: Both accept GATE with COAP counseling and require a bachelor's degree plus a master's with at least 60% marks (55% for SC/ST/PwD); both also offer direct M.Tech admission without GATE for IIT B.Tech graduates with a CPI of 8.0+.
Q: Which institute has a bigger academic budget?
A: IIT Delhi, with an annual budget of about ₹904.91 crore versus IIT Guwahati's ₹442.38 crore.
Q: Who is the current Director of IIT Delhi?
A: Rangan Banerjee, who took charge on 15 February 2022. No equivalent leadership detail for IIT Guwahati was available in sources.
Related
For the complete picture beyond Faculty and Academics -- placements, academics, campus life, and more -- see the full IIT Delhi vs IIT Guwahati comparison.