Telstra vs Optus: Which Is Better?

Telstra vs Optus: At-a-Glance

Telstra and Optus are both retail service providers (RSPs) on the NBN Co wholesale network — the same physical fibre and copper infrastructure built by the federal government. On identical NBN technology and plan tiers, the underlying line speed is determined by NBN Co, not the ISP. Where Telstra and Optus differ is in CVC (Connectivity Virtual Circuit) bandwidth provisioning: how much wholesale capacity each RSP buys from NBN Co to serve their customers at peak hours. Telstra consistently scores higher than Optus on evening speed ratios in ACCC NBN performance reports.

Plan Tier Comparison

Plan tiers and upload speeds are set by NBN Co wholesale specifications — every RSP offering NBN 100 delivers the same 100/20 Mbps maximum. The difference between Telstra and Optus is not the plan ceiling but how consistently each RSP delivers that speed during peak evening hours (7–11 PM), which is determined by their CVC provisioning.

When Telstra Wins

• Peak-hour speed consistency matters. Telstra's heavier CVC investment means fewer customers competing for limited wholesale bandwidth during evenings. ACCC NBN performance reports consistently show Telstra achieving higher evening speed ratios than Optus at matching plan tiers.
• You need in-person support. Telstra operates an extensive national retail store network. If you prefer walking into a store to resolve issues rather than calling or chatting online, Telstra is the better option.
• NBN is underperforming and 5G Home might help. Telstra's 5G Home Internet is an alternative to NBN at congested or low-performing FTTN addresses — useful if your NBN tech type limits your speeds.

When Optus Wins

• Promotional pricing is competitive at your address. Optus frequently offers sign-up deals that make it materially cheaper than Telstra. On a tight budget and willing to monitor performance, Optus can be good value during a promotional period.
• You're bundling with Optus mobile. Optus offers bundle discounts when combining NBN and mobile plans, which can offset any speed performance gap if you have multiple lines on the Optus network.
• 5G Home Internet where NBN is poor. Optus' 5G Home product delivers 100–300 Mbps typical at 20–40 ms ping — a legitimate alternative if your area has strong Optus 5G signal and poor NBN performance.

How to actually decide

1. Check your NBN technology type at your address first — FTTP and HFC deliver reliable plan-level speeds; FTTN is limited by copper line distance and may top out below your chosen plan tier regardless of RSP.
2. Look at current ACCC NBN performance reports — published quarterly, they show each RSP's evening speed ratio at each plan tier. At NBN 100, Telstra consistently scores higher than Optus.
3. Compare pricing at your address on the day you sign up. Promotional pricing swings can narrow or widen the Telstra/Optus gap significantly — the performance difference is real but modest.
4. Test after installation during evening hours. Run a wired Ethernet speed test at 8–9 PM on a weeknight — that's when CVC congestion shows up. Both providers offer return windows; use them if evening speeds disappoint.

Verdict

On equivalent NBN plan tiers, Telstra delivers slightly better evening speed consistency than Optus — the result of higher CVC investment. Both use identical NBN Co infrastructure and offer the same plan-level speeds. Optus often undercuts Telstra on promotional pricing, making it competitive if budget is the priority. If peak-hour performance is your main concern, Telstra has a consistent edge in ACCC data.

Methodology

Speed ranges and evening speed ratios are drawn from the ACCC's quarterly NBN Wholesale Market Indicators and NBN Performance Monitoring Reports. Latency figures reflect measured NBN FTTP performance from aggregated SpeedTestHQ data. Both providers use the same NBN Co wholesale infrastructure; measured differences reflect CVC provisioning choices, not physical network quality.

Plan availability, pricing, and speeds vary by address and change frequently. NBN technology type at your address determines your speed ceiling — verify before signing up. This comparison reflects typical measured performance, not guaranteed speeds.

Frequently Asked Questions

Is Telstra or Optus faster on NBN?

At the same plan tier (e.g. NBN 100), the plan speed ceiling is identical — set by NBN Co wholesale, not the ISP. During peak evening hours, Telstra consistently achieves higher evening speed ratios (~90–95% of plan) than Optus (~80–90%) in ACCC NBN performance reports, due to heavier CVC bandwidth provisioning. On NBN FTTP at off-peak hours, both hit close to 100% of plan.

Is Telstra or Optus better for gaming?

On equivalent NBN FTTP plans, latency is similar (10–18 ms), but Telstra's better CVC provisioning means less peak-hour congestion and lower jitter during evenings — when most gaming happens. On FTTN at either provider, latency is higher (20–30 ms) and depends heavily on your distance from the node. For gaming, FTTP at either provider beats FTTN; Telstra edges Optus on peak-hour consistency.

Is Telstra or Optus cheaper for NBN?

Optus is typically cheaper at base pricing and runs more frequent promotional deals. Telstra charges a premium for its NBN plans, partially justified by its higher CVC provisioning. Check current pricing at your address — Optus promotions can cut the gap to near zero on introductory pricing. The performance premium for Telstra is most noticeable at NBN 100 during evening hours.

Can I switch from Telstra to Optus easily?

Yes, and it's simple — because both use NBN Co infrastructure, no new physical line or technician visit is needed in most cases. Optus handles the service transfer through NBN Co's processes. You'll receive a new modem from Optus. Return Telstra equipment within their required window to avoid charges. Check for early termination fees if you're still in a Telstra contract before initiating the switch.