PRICING SNAPSHOT 2026-09-06CLAUDE FABLE 5 $10.00/$50.00 MTOKCLAUDE FABLE 5.1 $10.00/$50.00 MTOKCLAUDE OPUS 5 $5.00/$25.00 MTOKCLAUDE OPUS 4.8 $5.00/$25.00 MTOKCLAUDE SONNET 5 $2.00/$10.00 MTOKCLAUDE HAIKU 4.5 $1.00/$5.00 MTOKGPT-6 ASTRA $10.00/$50.00 MTOKGPT-5.6 $4.00/$20.00 MTOKGPT-5.6 CYBER $12.50/$75.00 MTOKGPT-5.5 $5.00/$30.00 MTOKGPT-5.4 $2.50/$15.00 MTOKGPT-5.6 TERRA $2.00/$12.00 MTOKGPT-5 MINI $0.25/$2.00 MTOKGPT-5.6 LUNA $0.20/$1.20 MTOKGEMINI 3.1 PRO $2.00/$12.00 MTOKGEMINI 3.6 FLASH $0.75/$3.75 MTOKGEMINI 3.5 FLASH $1.50/$9.00 MTOKGEMINI OMNI FLASH $1.50/$9.00 MTOKGEMINI 3.7 FLASH $0.75/$3.75 MTOKGEMINI 3.8 FLASH $0.75/$3.75 MTOKGEMINI 3 FLASH $0.50/$3.00 MTOKGEMINI 3.5 FLASH LITE $0.30/$2.50 MTOKDEEPSEEK V4 PRO $0.66/$1.98 MTOKDEEPSEEK V4 FLASH $0.22/$0.66 MTOKKIMI K2.6 $0.95/$4.00 MTOK

PRICING SNAPSHOT 2026-09-06CLAUDE FABLE 5 $10.00/$50.00 MTOKCLAUDE FABLE 5.1 $10.00/$50.00 MTOKCLAUDE OPUS 5 $5.00/$25.00 MTOKCLAUDE OPUS 4.8 $5.00/$25.00 MTOKCLAUDE SONNET 5 $2.00/$10.00 MTOKCLAUDE HAIKU 4.5 $1.00/$5.00 MTOKGPT-6 ASTRA $10.00/$50.00 MTOKGPT-5.6 $4.00/$20.00 MTOKGPT-5.6 CYBER $12.50/$75.00 MTOKGPT-5.5 $5.00/$30.00 MTOKGPT-5.4 $2.50/$15.00 MTOKGPT-5.6 TERRA $2.00/$12.00 MTOKGPT-5 MINI $0.25/$2.00 MTOKGPT-5.6 LUNA $0.20/$1.20 MTOKGEMINI 3.1 PRO $2.00/$12.00 MTOKGEMINI 3.6 FLASH $0.75/$3.75 MTOKGEMINI 3.5 FLASH $1.50/$9.00 MTOKGEMINI OMNI FLASH $1.50/$9.00 MTOKGEMINI 3.7 FLASH $0.75/$3.75 MTOKGEMINI 3.8 FLASH $0.75/$3.75 MTOKGEMINI 3 FLASH $0.50/$3.00 MTOKGEMINI 3.5 FLASH LITE $0.30/$2.50 MTOKDEEPSEEK V4 PRO $0.66/$1.98 MTOKDEEPSEEK V4 FLASH $0.22/$0.66 MTOKKIMI K2.6 $0.95/$4.00 MTOK

TOKENBURN_INDEX

THE TICKER · HEAD-TO-HEAD · CHECKED DAILY · LAST CHANGE 2026-09-06

GEMINI 3.1 PRO VS GEMINI 3.5 FLASH

Google vs Google, in USD per million tokens, cross-checked daily against the public pricing dataset. Same jobs, both meters running.

THE VERDICT

1.3x

Gemini 3.1 Pro costs 1.3x more than Gemini 3.5 Flash for the same job — a 1,000-token prompt with a 3,000-token reply runs $0.04 vs $0.03. At 1,000 runs a day, that gap is $285.00 a month for identical traffic.

SIDE BY SIDE

	Gemini 3.1 Pro →	Gemini 3.5 Flash →
Vendor	Google	Google
Input / MTok	$2.00	$1.50
Output / MTok	$12.00	$9.00
Output multiple	6.0x	6.0x
1K prompt + 3K reply	$0.04	$0.03

SAME JOB, BOTH BILLS

Scenario	Gemini 3.1 Pro	Gemini 3.5 Flash	Gap
A typical prompt	$0.01	$0.0086	1.3x
A 20-turn conversation	$0.06	$0.04	1.3x
Summarizing a 10-page document	$0.05	$0.04	1.3x
One agent run	$0.15	$0.11	1.3x
A code review request	$0.05	$0.04	1.3x

Output sizes use the same editorial ratios as the Burn Calculator. Estimates, not invoices — and price is not a benchmark: the cheaper model is only a bargain if it does the job.

SETTLE IT WITH YOUR OWN PROMPT

Paste a real prompt into the Burn Calculator and see what it costs on Gemini 3.1 Pro, Gemini 3.5 Flash and the other 23 models on the board — plus how much of it is waste either way.