Will Gemini 4 Argon stay this cheap?

No. Gemini 4 Argon's $2/$10 rate is an introductory promotion confirmed to end soon, after which pricing is set to double to $4 per million input and $20 per million output tokens, making it pricier than Claude Sonnet 5.

How much would 100M input and 30M output tokens cost monthly?

At current rates, both models cost $200 for 100M input tokens ($2/M) plus $300 for 30M output tokens ($10/M), totaling $500 per month for either model.

Which model is cheaper for output-heavy workloads?

Neither has a pricing edge today since output rates are identical at $10 per million tokens for both. However, if Gemini 4 Argon tends to produce more output tokens per task, actual spend could run higher on Argon despite the matching per-token rate.

HEAD-TO-HEAD · FLAGSHIP-TIER · VERIFIED OCTOBER 17, 2026

Gemini 4 Argon or Claude Sonnet 5 — which is actually cheaper?

Q: Are Gemini 4 Argon and Claude Sonnet 5 the same price right now?

Yes, as of October 2026 both models list identical rates of $2 per million input tokens and $10 per million output tokens, making them cost-equivalent for any workload at today's pricing.

Gemini 4 Argon and Claude Sonnet 5 are currently priced identically at $2 per million input tokens and $10 per million output tokens. On sticker price alone, there's no gap — the real differentiator comes down to context window, output behavior, and how long these rates hold.

Spec	Gemini 4 Argon	Claude Sonnet 5
Input / 1M tokens	$2.00	$2.00
Output / 1M tokens	$10.00	$10.00
Context window	1M	1M

The output price gap

There is no output price gap today — both models charge $10 per million output tokens, a 5x premium over their input rate. The practical difference to watch is token efficiency: some independent testing on Gemini 4 Argon has found it tends to generate more output tokens per completed task than competing models, which can inflate real-world spend even when the per-token rate matches.

Context window

Gemini 4 Argon ships with roughly a 1 million token context window, and Claude Sonnet 5 (as the successor to Sonnet 5.5) is expected to sit in the same 1M-token range based on Anthropic's recent flagship releases. Treat both figures as best estimates rather than confirmed specs, since exact context limits can shift between model point-releases.

Worked example

At 100M input tokens and 30M output tokens per month: input cost is 100 x $2 = $200, and output cost is 30 x $10 = $300, for a combined total of $500/month on Gemini 4 Argon. Claude Sonnet 5 computes identically — 100 x $2 = $200 input plus 30 x $10 = $300 output — also totaling $500/month. At today's rates, the two models are cost-equivalent for this workload.

Prices from the LLM Price Watch daily tracker, 2026-10-17. Prices change; use the calculator with your own usage for an exact comparison, or see the full price table for every tracked model.