Heidi Klum and Seal are allegedly still working on their marriage, despite recent reports suggesting they are headed for divorce.

On Saturday, TMZ claimed the pair were planning on ending their marriage, with Heidi citing "irreconcilable differences" as the reason for their split.

The US website claimed Heidi would file the divorce papers as early as next week.

However, sources have revealed the couple are still together for now, and have just been weathering a "rough" time in their marriage.

"Nothing is finalised or for sure. Seal flew back from the UK yesterday and he and Heidi are in the house together now," friend close to the couple told Us Weekly.

"They've had a very rough road lately. They're either madly in love or having crazy fights.

"It's been very hard, but there is a lot of love there, and any decision that will be made is a tough one because they have beautiful children who they both love very deeply.

Other sources also say Heidi and Seal won't resort to divorce just yet.

"They've been fighting a lot lately, but they have no plans to announce a split right now," a source told People.

"They're not divorcing. They seem to be doing a lot better. They're both wearing their wedding bands."

The insider added that distance has "tested" Heidi and Seal in recent months.

Seal is promoting new album, Soul 2, and recently flew solo to New York to appear on Late Show with David Letterman. The singer then travelled to London for more work-related commitments.

Heidi and Seal married in May 2005, and are renowned for renewing their wedding vows every year on their anniversary.

The couple raise four children together; biological children, Henry, 6, Johan, 5, and Lou, 2, and Heidi's 7-year-old daughter Leni from her previous marriage, who Seal adopted in 2009.