Two flagship-class models landed 24 hours apart. Grok 4.6 arrived on 12 August 2026. Gemini 3.7 Flash arrived on 13 August. If you only have time to test one this week, this is the cheat sheet.
This is not a copy of either lab’s blog. It is a buyer’s guide for developers, students, and small teams in Pakistan who will actually pay (or burn free credits) on these APIs.
Snapshot
| Grok 4.6 | Gemini 3.7 Flash | |
|---|---|---|
| Released | 12 Aug 2026 | 13 Aug 2026 |
| Maker | SpaceXAI | Google DeepMind |
| Context | 500k tokens | ~1,048,576 tokens |
| Inputs | Text, image | Text, image, video, audio, PDF |
| Intro API price | $2 in / $6 out per 1M | $0.75 in / $3.75 out per 1M (until 31 Dec 2026) |
| After intro | Same list (long-context surcharge possible) | $1.50 / $7.50 from 1 Jan 2027 |
| Reasoning knobs | low, medium, high, xhigh | medium / high (minimal unsupported) |
| Headline score | Ties GPT-5.6 Sol at 61 on AA Intelligence Index (SpaceXAI) | Big jumps vs Gemini 3.6 Flash on DeepSWE, FrontierCode, AutomationBench (Google) |
| Best home | Cursor, Grok Build, API, Bedrock | AI Studio, Spark, Antigravity, Workspace |
Independent speed notes circulating this week put Flash near ~340 tok/s versus Grok nearer ~86 tok/s. Treat those as directional until you measure your own loop.
Pick Grok 4.6 if you…
- Live in Cursor and want the model that was trained for long-running agents (research → code → self-check).
- Care about GDPVal-style knowledge work and are willing to pay more per token for fewer human babysitting minutes.
- Need xhigh effort on a nasty refactor, not a cheap autocomplete.
- Want AWS procurement via Bedrock.
SpaceXAI’s own table has Grok 4.6 matching GPT-5.6 Sol on the composite AA index while charging less than many frontier SKUs. DeepSWE still trails some GPT/Fable numbers in that same table — so “smarter at everything” is the wrong slogan. “Stays with the task” is the right one.
Pick Gemini 3.7 Flash if you…
- Need video, audio, or fat PDFs in the same call.
- Run high-QPS or student-facing tools where latency and the $0.75 intro rate matter.
- Already pay for Google AI Pro / Ultra and want Spark / Workspace to get better without a new vendor.
- Are migrating off 3.6 Flash and want a drop-in ID with better coding scores.
Google’s story is volume: ship a cheaper workhorse three weeks after the last Flash, undercut the new Grok list price, and keep developers on the Gemini API while 3.5 Pro is late.
The honest “use both” setup
That is what most serious teams will do:
- Cursor + Grok 4.6 for repo-scale agents (see Cursor’s Grok 4.6 notes).
- Gemini 3.7 Flash for multimodal ingestion, cheap classification, and app backends.
- Re-evaluate in January 2027 when Flash’s intro discount ends.
Do not choose from a Twitter screenshot. Run the same 10 tasks: a LESCO-tariff PDF extract, a Next.js bug, a 200-file refactor, and a bilingual (Urdu/English) customer email. The winner is the one that fails less on your stack.
Pakistan-specific cost math
At roughly PKR 280 = $1 (use your bank’s rate, not this example):
- 1 million Grok input tokens ≈ PKR 560
- 1 million Gemini intro input tokens ≈ PKR 210
Output is where agents get expensive. A Cursor session that thinks for a long time can burn more on Grok even if it “feels smarter.” Log tokens. Cap xhigh. Cache prompts.
Read the primary notes
- Grok 4.6 launch
- Gemini 3.7 Flash launch
- Google Student Hub if you are choosing a study assistant instead of an API