GPT-5 for GTM teams: what changed and great prompts to use
Hello and welcome to The GTMnow Newsletter by GTMnow – a weekly publication by VC firm, GTMfund.
GPT-5 is here. If you have a Pro account and don’t see it as a toggle for your Chats, try creating a Custom GPT and you should see it as an option.
GPT-5’s impact on go-to-market is bigger than most people realize.
In SaaS, speed used to be dictated by product. Engineering velocity set the pace: you could only go to market as fast as you could ship features, fix bugs, and roll out integrations.
That’s changed. Tech moats are declining, it’s never been easier to build.
Speed has moved upstream.
The new constraint isn’t “Can we build it?” – it’s “Can we tell the market, enable our teams, and capture demand before someone else does?.” Your go-to-market strategy and execution is the bottleneck now.
This is why GPT-5 is significant for GTM: it removes traditional GTM lag by letting you ideate campaigns, produce assets, update messaging, analyze results, and redeploy — all in a single workflow. That closes the gap between product shipping and the market knowing about it.
This edition breaks down 7 notable changes from GPT-5, what this means for your GTM, and prompts to try.
1. One model with two speeds (no more choosing between fast or smart) → instant ideation + deep strategy
What changed:
GPT-5 merges the speed of GPT-4o with the deep reasoning of models like o1 and o3. You no longer have to pick between a “fast” or a “smart” model — the auto-router decides when to fire off an instant answer and when to slow down for multi-step reasoning.
What this means for your GTM:
That means you can bounce from “give me 10 subject line ideas” to “outline a multi-phase ABM strategy” in the same conversation without breaking flow. It keeps pace when you need speed, and digs in when the work demands it.
Prompt to try:
You are my fractional CMO. Give me 3 high-leverage growth experiments for a mid-stage B2B SaaS targeting CFOs at $50M–$200M revenue companies. For each, include the hypothesis, why it’s likely to work, and the first test to run.
2. Marketers as builders → ship interactive tools without a dev team
What changed:
GPT-5 is the most capable front-end coding model OpenAI has shipped. It can design and code complete UIs, interactive tools, dashboards, and demos from a single prompt.
What this means for your GTM:
That’s a shift from static gated assets toward live, code-powered experiences that demonstrate value instantly. For GTM teams, it’s the difference between sending a PDF and launching an ROI calculator that captures leads and qualifies them on the spot.
Prompt to try:
Build a fully functional ROI calculator for a B2B SaaS selling to CFOs. The tool should take ARR, headcount, and SaaS spend as inputs, calculate savings, and display results in a branded dashboard. Add a lead form before results are shown.
3. Reliable multi-step plans → full GTM playbooks in one go
What changed:
Previous models could drift or drop details halfway through a long, complex ask. GPT-5 holds context better, making it reliable for multi-turn, multi-layer requests – like building a complete launch plan with phases, channels, examples, and metrics.
What this means for your GTM:
You can offload entire strategy docs, playbooks, or onboarding sequences in one go, instead of assembling them from fragmented prompts.
Prompt to try:
Create a 90-day GTM launch plan for an AI-powered expense management tool. Break it into phases, recommend top channels, give example campaign ideas, budget split, and the metrics to track weekly. Format it as a table.
One of our portfolio companies was asked by OpenAI to test GPT-5 on accounting and the results were massive. Combined, these increases help execute multi-step plans.
4. 400K tokens of context → see the whole revenue picture at once
What changed:
GPT-5 can now process the equivalent of hundreds of pages of input in one prompt, which is double GPT-4o’s capacity.
What this means for your GTM:
You can feed it months of CRM data, win/loss notes, call transcripts, and campaign retros in one shot and get a unified, pattern-based analysis instead of piecing insights together manually.
Prompt to try:
Based on this combined dataset – 6 months of CRM exports, sales call transcripts, and win/loss notes – identify the 5 biggest factors affecting close rates. Show how each changed over time and recommend 3 specific GTM actions to improve them.
5. Agentic reasoning and execution → collapse market research into one prompt
What changed:
GPT-5 is better at chaining steps together – researching, analyzing, and creating in one pass – without constant human steering.
What this means for your GTM:
You can collapse workflows like competitor content audits into a single prompt that both analyzes and produces ready-to-publish assets.
Prompt to try:
Here are 15 competitor LinkedIn posts: [paste]. Identify their 3 most common positioning angles and content formats. Then create 5 new post drafts for my AI compliance software that use similar hooks but speak to CIOs at enterprise fintech companies.
6. Voice and visual feedback → get instant creative feedback on the go
What changed:
Voice input now feels natural, and GPT-5’s visual reasoning is sharper. You can upload a screenshot of a homepage, sales deck, or ad creative, and get instant critique and suggestions.
What this means for your GTM:
You can review creative on the go, talk through campaign adjustments, or get copy feedback in real time. This creates faster iteration cycles and more collaborative creative reviews, without waiting for the next stand-up.
Prompt to try (spoken):
[Upload screenshot(s) of ads/LP] These target our primary ICP. Critique each headline and subhead, rewrite for higher response, propose 1 new creative concept with a test plan (audience, metric, sample size), and call out potential risks before launch.
7. Pricing and access
What changed:
GPT-5 is now free to use in ChatGPT, instantly putting a reasoning-capable model in the hands of ~700M weekly users. API pricing is low enough to push vendors to switch from competitors like Anthropic and Google.
What this means for your GTM:
The tools you’re already using will likely get GPT-5-powered upgrades fast, without you lifting a finger.
There should also be less hallucinations, which is always a good thing.
Tag GTMnow so we can see your takeaways and help amplify them.
✅ Recommendations
This resource gives you 7 ready-to-use survey templates to help you collect the customer evidence today’s buyers demand. Trust is everything and the market is getting more competitive. You need more proof, and you need it faster. These templates make it easy.
Grab the templates built from 10+ years of survey design experience and start gathering customer evidence that sells.
👀 More for your eyeballs
Clouded Judgement: In the AI shift, winners won’t just have better products—they’ll have new ways of working. Startups are already running the playbook while incumbents are still rewriting theirs.
Jeeva’s CEO Gaurav Bhattacharya wrote the vision, values, and cadence before a single line of code—then hit $5M ARR in six months. The lesson: define how you work early, overcorrect while you’re small, and make tradeoffs crystal clear.
Clari and Salesloft are merging to create a $10T “Revenue AI” powerhouse, uniting billions of buyer signals to transform how teams close deals. Not without some commentary from Gong’s CEO.
👂 More for your eardrums
Gaurav Agarwal is the COO of ClickUp, where he’s helped scale the company 17x in two years and cut CAC by 3x—all while leading across marketing, product, sales, and services.
Listen on YouTube, Apple, Spotify or wherever you get your podcasts by searching “The GTMnow Podcast.”
🚀 Startup to watch
Anything – the agent for building products without coding launched yesterday and is going hyper viral on X, with over 2M views. Anything creates full iOS and Android apps in minutes, taking your prompts and fixing any errors on its own. Preview on your phone and then submit to the App Store in 1 click.
You can try it for yourself on their website.
🔥 Hottest GTM jobs of the week
- Strategic Channel Manager – NAMER at Vanta (Remote – US)
- Agency Strategy Lead at Northbeam (Remote – US)
- Account Executive, Commercial at Gorgias (Hybrid – Toronto)
- Manager, Product Marketing at CaptivateIQ (Remote – US)
- Vice President, Revenue at Amper (Remote – US)
See more top GTM jobs on the GTMfund Job Board.
If you’re looking to scale your sales and marketing teams with top talent, we couldn’t recommend our partner Pursuit more. We work closely together to be able to provide the top go-to-market talent for companies on a non-retainer basis.
🗓️ GTM industry events
Upcoming go-to-market and VC events you won’t want to miss:
- INBOUND 2025: September 3-5, 2025 (San Francisco, CA)
- GTMfund Dinner SF (private registration): September 10, 2025 (San Francisco, CA)
- Pavilion GTM Summit: September 23-25, 2025 (Washington, DC)
- Dreamforce: October 14-16, 2025 (San Francisco, CA)
- GTMfund Dinner (private registration): October 22, 2025 (Austin, TX)
- GTMfund Dinner (private registration): November 18, 2025 (Toronto, ON)
- GTMfund Dinner (private registration): November 19, 2025 (New York, NY)
- GTMfund Dinner (private registration): November 19, 2025 (New York, NY)
