Claude Fable 5 vs GPT-5.5: API price and specs

GPT-5.5 is 50% cheaper than Claude Fable 5 on input price.

GPT-5.5 is 35% cheaper than Claude Fable 5 on output price.

GPT-5.5 is 42% cheaper than Claude Fable 5 on a 1M-in / 200k-out workload.

GPT-5.5 has a 5% larger context than Claude Fable 5.

Field	Claude Fable 5	GPT-5.5
Lowest input, per 1M	$3.00 +100%	$1.50
Median input, per 1M	$10.00 +100%	$5.00
Lowest output, per 1M	$18.50 +54.2%	$12.00
Median output, per 1M	$50.00 +66.7%	$30.00
Lowest unit price	$0.001 / request	$0.001 / request
Cost of 1M in + 200k out	$6.70 +71.8%	$3.90
Context	1M +4.8%	1.1M
Max output	128K	128K
Providers	34	30 +11.8%
Regions	EU, GLOBAL, US	EU, GLOBAL, US
Accepts	application/pdf, file, image, image/gif, image/jpeg, image/png, image/webp, pdf, text	application/pdf, file, image, image/gif, image/jpeg, image/png, image/webp, pdf, text
Returns	text	image, text
Type	Text models	Text models
Free option	no	no
Cheapest provider	xpersona	xpersona

Your own workload: how many tokens the model gets (input) and gives back (output) - for example, in a month. The "Cost" row of the table above is recalculated for these numbers, for each model.

Computed from current offers each time the page opens; the best value of a row is bold, the percent is how far behind the best.

Providers selling both

302ai, abacus, aihubmix, amazon-bedrock, azure, cometapi, digitalocean, edenai, fastrouter, freemodel, github-copilot, impossibl, jiekou, kenari, kilo, meganova, nearai, ofox, opencode, openrouter, orcarouter, perplexity-agent, requesty, trustedrouter, vercel, xpersona, zenmux

Frequently asked questions

Which is cheaper, Claude Fable 5 or GPT-5.5?

GPT-5.5 is 50% cheaper than Claude Fable 5 on input price. GPT-5.5 is 35% cheaper than Claude Fable 5 on output price. GPT-5.5 is 42% cheaper than Claude Fable 5 on a 1M-in / 200k-out workload.

Which has the larger context, Claude Fable 5 or GPT-5.5?

Claude Fable 5: 1M tokens; GPT-5.5: 1.1M tokens.

Where can I use both Claude Fable 5 and GPT-5.5?